{"title":"GSC In Stock","description":"","products":[{"product_id":"gsc-viton-valve-stem-seals-set-mitsubishi-evo-1-9-1002","title":"GSC Viton Valve Stem Seals Set","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Viton-Valve-Stem-Seals-Set-Mitsubishi-Evo-1-9-1002\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Viton Valve Stem Seals for the Mitsubishi 4G63T 6.6mm valve size seal set. These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines. Sold as a set of 16\u003c\/p\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Viton-Valve-Stem-Seals-Set-Mitsubishi-Evo-1-9-1002\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887184785711,"sku":"GSC1002","price":39.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC1002.png?v=1710134087"},{"product_id":"gsc-37mm-1mm-intake-valve-single-subaru-ej20-ej25-2014-01","title":"GSC 37mm (+1mm) Intake Valve SINGLE","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-37mm-1mm-Intake-Valve-Set-of-8-Subaru-EJ20\/EJ25-2014-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp style=\"text-align: justify;\"\u003e\u003cstrong\u003eNote: Single Valve Only. 8 Required for full engine build.\u003c\/strong\u003e\u003c\/p\u003e  \u003cp style=\"text-align: justify;\"\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eValve Features\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli style=\"text-align: justify;\"\u003eSwirl polished heads for smoother air flow over the valve\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eBack cut to reduce valve weight for higher RPM, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve stems are micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eIntake valves are a modified 21-4n stainless and exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tip lengths - we have taken extra time to adjust tip heights on the applications to require less tipping of the valve, to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eWe have also adjusted the keeper groove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValves will work with an OEM keeper\/lock or, when available, our upgraded keeper\/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-37mm-1mm-Intake-Valve-Set-of-8-Subaru-EJ20\/EJ25-2014-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887184818479,"sku":"GSC2014-01","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2014-01.jpg?v=1710134087"},{"product_id":"gsc-oem-replacement-valve-spring-seat-set-mitsubishi-evo-1-9-1004","title":"GSC OEM Replacement Valve Spring Seat Set","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-OEM-Replacement-Valve-Spring-Seat-Set-Mitsubishi-Evo-1-9-1004\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003cp\u003eGSC Power-Division OEM Replacement Valve Spring Seat Set for 4G63T. Perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives. Same thickness as OEM, so no spring pressure change when using these. Sold as a set of 16.\u003c\/p\u003e \u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-OEM-Replacement-Valve-Spring-Seat-Set-Mitsubishi-Evo-1-9-1004\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887184949551,"sku":"GSC1004","price":49.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/1004.png?v=1710134087"},{"product_id":"gsc-intake-valve-guide-w-stopper-std-set-of-8-subaru-wrx-sti-fxt-lgt-ej20-ej25-gsc3026-8","title":"GSC Intake Valve Guide w\/Stopper STD Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Intake-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3028-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Intake Valve Guide for Subaru EJ20\/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), stopper style\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eStandard sized sold as set of 8 or individually\u003c\/li\u003e \t\u003cli\u003eOversized sold individually as +0.001\" and +0.003\" \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Intake-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3028-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185015087,"sku":"GSC3026-8","price":99.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC3026-8.jpg?v=1710134086"},{"product_id":"gsc-traditional-intake-valve-guide-std-set-of-8-subaru-wrx-sti-fxt-lgt-ej20-ej25-gsc3028-8","title":"GSC Traditional Intake Valve Guide STD Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Intake-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3028-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Traditional Intake Valve Guide for Subaru EJ20\/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), smooth style\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eStandard sized sold as set of 8 or individually\u003c\/li\u003e \t\u003cli\u003eOversized sold individually as +0.001\" and +0.003\" \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Intake-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3028-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185113391,"sku":"GSC3028-8","price":99.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC3028-8.jpg?v=1710134086"},{"product_id":"gsc-r2-billet-camshaft-set-274-274-mitsubishi-evo-4-8-7008s2","title":"GSC R2 Billet Camshaft Set 274\/274","description":"\u003cp\u003eThe 7008R2 is a high lift, very aggressive profile, with a short overall duration to keep a lower usable RPM band. The 7008R2 is designed to rev between 4000-8500 RPMs and should be used with a stroked engine or added displacement engine. The peak lift of 12.0mm intake and exhaust will require upgraded valve springs and a titanium retainer with special attention to seal to retainer clearance. With the lift of this profile, it is suggested to only use the 5041\/5040 Ti retainer and spring kits due to valve seal to retainer clearance. The 5041 can be used to 40+psi and the 5040 to 32psi on the R2 profile at 8500 RPMs without float or flutter issues. The profile will work fine on the OEM rocker arm and the zero-tick lifter, or with the OEM lifter. We have seen gains of 25-30 WHP over the S2 profile on the stroked applications, with much more possible when used with a ported head and aftermarket intake manifold.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003e**If using aftermarket cam gears (especially AEM) check the bolt length. Some cam gears are too thick for the OEM bolt on the billet cams, a 40mm underhead length bolt may be necessary in this case**\u003c\/strong\u003e\u003c\/p\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-S2-Billet-Camshaft-Set-274\/274-Mitsubishi-Evo-4-8-7008S2\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185178927,"sku":"GSC7008R2","price":1399.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/7008R2.jpg?v=1710134090"},{"product_id":"gsc-p-d-12-subaru-wrx-15-brz-toyota-86-single-spri","title":"GSC Single Valve Spring Set with Titanium Retainers\/Chromoly Seats","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/gsc-p-d-12-subaru-wrx-15-brz-toyota-86-single-spri\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003cp\u003eGSC Power-Division's Single, Cylindrical Spring kit is designed for the 2.0L FA20 engines found in the 2015-20 Subaru WRX and 2013-20 Subaru BRZ \/ FRS. These are great for boosted applications or high revving NA engines needing more spring with out breaking the bank. These can handle up to 8200RPM and 20LBS of boost due to new chrome moly valve spring seats and light weight titanium retainers. \u003c\/p\u003e  \u003cp\u003eIncludes: \u003cbr\u003e 16 Valve Springs\u003cbr\u003e 16 Ti Retainers\u003cbr\u003e 16 Spring Seats\u003c\/p\u003e  \u003cp\u003e5756 Install Heights:\u003cbr\u003e 1.298\" = 85 lbs\u003cbr\u003e 0.948\" = 160lbs\u003cbr\u003e 0.848\" = 182lbs\u003cbr\u003e 0.782\"= Coil bind\u003c\/p\u003e  \u003cp\u003eMax Boost: 20 PSI \u003cbr\u003e Max RPM: 8200\u003c\/p\u003e \u003ca href=\"https:\/\/www.prospeedracing.com.au\/gsc-p-d-12-subaru-wrx-15-brz-toyota-86-single-spri\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185146159,"sku":"GSC5756","price":669.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC5756.jpg?v=1710134087"},{"product_id":"gsc-traditional-exhaust-valve-guide-std-set-of-8-subaru-wrx-sti-fxt-lgt-ej20-ej25-gsc3027-8-296094","title":"GSC Exhaust Valve Guide w\/Stopper STD Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Exhaust-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3027-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Exhaust Valve Guide for Subaru EJ20\/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), stopper style\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eStandard sized sold as set of 8 or individually\u003c\/li\u003e \t\u003cli\u003eOversized sold individually as +0.001\" and +0.003\" \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Exhaust-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3027-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e \u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185342767,"sku":"GSC3025-8","price":99.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC3025-8.jpg?v=1710134086"},{"product_id":"gsc-viton-valve-stem-seals-subaru-ej20-ej25-1022","title":"GSC Viton Valve Stem Seals","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Viton-Valve-Stem-Seals-Subaru-EJ20\/EJ25-1022\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Viton Valve Stem Seals for the Subaru EJ257, EJ207, and EJ205 6mm seal set. These are an upgrade from the standard OEM material to help cope with the higher heat caused increasing the performance of your engine. Sold as a set of 16\u003c\/p\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Viton-Valve-Stem-Seals-Subaru-EJ20\/EJ25-1022\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185375535,"sku":"GSC1022","price":39.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/1022.jpg?v=1710134087"},{"product_id":"gsc-beehive-spring-set-with-titanium-retainer-subaru-ej20-ej25-5043","title":"GSC Beehive Spring set with Titanium Retainer","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Beehive-Spring-set-with-Titanium-Retainer-Subaru-EJ20\/EJ25-5043\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eThe GSC Power-Division Beehive Valve Spring Kit with Ti Retatiner for the Subaru Turbo EJ Platforms includes 16 titanium retainers and 16 beehive valve springs. Our beehive spring is made with an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilites. These springs have the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring. Beehive springs allow for the use of a smaller, lighter retainer allowing for higher RPM and more valve control. \u003c\/p\u003e  \u003cp\u003e \u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eBeehive Spring Benefits:\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eRev faster\u003c\/li\u003e \t\u003cli\u003eLighter components\u003c\/li\u003e \t\u003cli\u003eMore durable design\u003c\/li\u003e \t\u003cli\u003eLess stress on valvetrain components\u003c\/li\u003e \t\u003cli\u003eHIgher spring frequency for more precise valve control\u003c\/li\u003e \t\u003cli\u003eMore valve control equals more aggressive cam profiles\u003c\/li\u003e \t\u003cli\u003eNano peened for faster break-in and less spring stress\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e \u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003e81lbs @ 1.363\" install height \u003c\/li\u003e \t\u003cli\u003e230 lbs @ 0.910\"\u003c\/li\u003e \t\u003cli\u003eMax RPM: 9,500 RPM\u003c\/li\u003e \t\u003cli\u003eMax boost: 35 psi\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Beehive-Spring-set-with-Titanium-Retainer-Subaru-EJ20\/EJ25-5043\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185539375,"sku":"GSC5043","price":879.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/5043.jpg?v=1710134087"},{"product_id":"gsc-32mm-exhaust-valve-set-of-8-subaru-ej20-ej25-2011-8","title":"GSC 32mm Exhaust Valve Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp style=\"text-align: justify;\"\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eValve Features\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli style=\"text-align: justify;\"\u003eSwirl polished heads for smoother air flow over the valve\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eBack cut to reduce valve weight for higher RPM, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve stems are micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eIntake valves are a modified 21-4n stainless and exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tip lengths - we have taken extra time to adjust tip heights on the applications to require less tipping of the valve, to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eWe have also adjusted the keeper groove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValves will work with an OEM keeper\/lock or, when available, our upgraded keeper\/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185572143,"sku":"GSC2011-8","price":329.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2011-8.jpg?v=1710134087"},{"product_id":"gsc-36mm-intake-valve-set-of-8-subaru-ej20-ej25","title":"GSC 36mm Intake Valve Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/gsc-32mm-intake-valve-set-of-8-subaru-ej20-ej25\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp style=\"text-align: justify;\"\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eValve Features\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli style=\"text-align: justify;\"\u003eSwirl polished heads for smoother air flow over the valve\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eBack cut to reduce valve weight for higher RPM, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve stems are micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eIntake valves are a modified 21-4n stainless and exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tip lengths - we have taken extra time to adjust tip heights on the applications to require less tipping of the valve, to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eWe have also adjusted the keeper groove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValves will work with an OEM keeper\/lock or, when available, our upgraded keeper\/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/gsc-32mm-intake-valve-set-of-8-subaru-ej20-ej25\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185670447,"sku":"GSC2012-8","price":329.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2012-8.jpg?v=1710134087"},{"product_id":"gsc-traditional-exhaust-valve-guide-std-set-of-8-subaru-wrx-sti-fxt-lgt-ej20-ej25-gsc3027-8","title":"GSC Traditional Exhaust Valve Guide STD Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Exhaust-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3027-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Traditional Exhaust Valve Guide for Subaru EJ20\/25 Series (EJ205, EJ207, EJ255, EJ257, EJ257B), smooth style\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003eStandard sized sold as set of 8 or individually\u003c\/li\u003e \t\u003cli\u003eOversized sold individually as +0.001\" and +0.003\" \u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-Traditional-Exhaust-Valve-Guide-STD-Set-of-8-Subaru-WRX\/STI\/FXT\/LGT-EJ20\/EJ25-GSC3027-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185735983,"sku":"GSC3027-8","price":99.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC3027-8.jpg?v=1710134086"},{"product_id":"gsc-oem-replacement-valve-keeper-set-subaru-ej20-ej25-1006","title":"GSC OEM Replacement Valve Keeper Set","description":"\u003cp\u003eGSC Power-Division Valve Keeper (Lock) Set for Subaru EJ Engines. Comes as a set for 16 valves (32 pieces) Suitable for all GSC Power-Division EJ Valves and valve spring kits. These can be used in place of the OEM on stock valves and retainers as well. New keepers are recommended anytime the valves are replaced for proper fitment in the valve groove. Proper fitment allows for rotation and stability for the valve train. \u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185768751,"sku":"GSC1006","price":79.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/1006.jpg?v=1710134087"},{"product_id":"gsc-37mm-1mm-intake-valve-set-of-8-subaru-ej20-ej25-2014-8","title":"GSC 37mm (+1mm) Intake Valve Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-37mm-1mm-Intake-Valve-Set-of-8-Subaru-EJ20\/EJ25-2014-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e  \u003cp style=\"text-align: justify;\"\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e \u003cbr\u003e \u003cstrong\u003eValve Features\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli style=\"text-align: justify;\"\u003eSwirl polished heads for smoother air flow over the valve\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eBack cut to reduce valve weight for higher RPM, higher boost pressure, and allow for more aggressive cam profiles without increasing valve spring seat pressures\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve stems are micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eIntake valves are a modified 21-4n stainless and exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValve tip lengths - we have taken extra time to adjust tip heights on the applications to require less tipping of the valve, to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eWe have also adjusted the keeper groove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits\u003c\/li\u003e \t\u003cli style=\"text-align: justify;\"\u003eValves will work with an OEM keeper\/lock or, when available, our upgraded keeper\/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-37mm-1mm-Intake-Valve-Set-of-8-Subaru-EJ20\/EJ25-2014-8\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":48887185801519,"sku":"GSC2014-8","price":329.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2014-8.jpg?v=1710134087"},{"product_id":"gsc-33mm-1mm-chrome-polished-exhaust-valve-single-gsc2017-01","title":"GSC 33mm (+1mm) Chrome Polished Exhaust Valve SINGLE","description":"\u003cp\u003eWhen creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve. GSC Power-Division's valves are sure to become the industries standard for sport compact performance valves.\u003c\/p\u003e  \u003cp\u003eThe new Super Alloy Exhaust valves were designed for engines used in extreme conditions. With advancements in manufacturing technology and metallurgy, GSC Power-Division was able to design a blend of Super Alloys that can handle the immense heat and power levels of today's ultra-high horsepower turbocharged and normally aspirated engines. The GSC Super Alloy exhaust valves are designed to withstand EGT's between 1800-2000F. Each Super Alloy Exhaust valve utilizes chrome polished stems to create a smooth, durable finish for added life and better lubricity especially when paired with GSC manganese bronze valve guides. Strength, heat resistance and performance are engineered into every valve. In addition, head dish is maximized for weight savings while swirl polished and back cut heads promote better air flow without sacrificing durability.\u003c\/p\u003e  \u003cp\u003eGSC Power-Division Super Alloy Exhaust valves are available individually or as sets of 8 or 12 depending on the application. Head sizes are either standard or +1mm.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":49814377398575,"sku":"GSC2017-01","price":84.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/GSC2017-01.jpg?v=1716355308"},{"product_id":"gsc-exhaust-valve-guide-w-stopper-set-of-6-gsc3147-6","title":"GSC Exhaust Valve Guide w\/ Stopper set of 6","description":"\u003cp\u003eGSC Power-Division Exhaust Valve Guide for Toyota G16E-GTS found in the GR Yaris and GR Corolla, stopper style\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":50489031950639,"sku":"GSC3147-6","price":79.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/0de60a28f6ee71e38fa43d272ae12021.jpg?v=1726187073"},{"product_id":"gsc-intake-valve-guide-w-stopper-gsc3146-6","title":"GSC Intake Valve Guide w\/ Stopper","description":"\u003cp\u003e\u003cspan\u003eGSC Power-Division Intake Valve Guide for Toyota G16E-GTS found in the GR Yaris and GR Corolla, stopper style.\u003c\/span\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":50489039847727,"sku":"GSC3146-6","price":79.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/0de60a28f6ee71e38fa43d272ae12021_1.jpg?v=1726187435"},{"product_id":"gsc-34mm-std-intake-valve-set-of-8-gsc2282-8","title":"GSC 34mm (STD) Intake Valve Set of 8","description":"\u003cp\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":50984509047087,"sku":"GSC2282-8","price":369.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2014-8.jpg?v=1710134087"},{"product_id":"gsc-29mm-std-exhaust-valve-set-of-8-gsc2281-8","title":"GSC 29mm (STD) Exhaust Valve Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration: none;\"\u003e \u003c\/a\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":50984520581423,"sku":"GSC2281-8","price":369.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2014-8.jpg?v=1710134087"},{"product_id":"gsc-30mm-1mm-exhaust-valve-set-of-8-gsc2283-8","title":"GSC 30mm (+1mm) Exhaust Valve Set of 8","description":"\u003cp\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration: none;\"\u003e \u003c\/a\u003eWhen creating our new valve line we set out to create the best performance, longest lasting valves available to the aftermarket. Using advanced 3D design and simulation software, we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used, we have less valve distortion at the face than any of the tested designs. Less distortion allows for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power-Division's new valves are sure to become the industry standard for sport compact performance valves.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GSC-32mm-Exhaust-Valve-Set-of-8-Subaru-EJ20\/EJ25-2011-8\" style=\"text-decoration: none;\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":50984528707887,"sku":"GSC2283-8","price":379.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2014-8.jpg?v=1710134087"},{"product_id":"gsc-32mm-std-exhaust-valve-set-of-8-subaru-ej20-ej25-turbo-gsc2015-8","title":"GSC 32mm (STD) Super Alloy Exhaust Valve Set of 8","description":"\u003cp\u003eGSC Power-Division SuperAlloy Exhaust Valve for Subaru EJ Turbo\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eSTD size 32mm \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eGSC Power-Division Super Alloy Exhaust Valves for EJ20\/25 Turbo are for those running high horsepower, high EGT set ups that need a valve that will last in 2000°F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides. Strength, heat resistance, and performance are engineered into every valve. Under head dish is maximized for weight savings while swirl polished and backcut heads promote better air flow without sacrificing durability.\u003c\/p\u003e\n","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":51887884337455,"sku":"GSC2015-8","price":619.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/superalloygroup_WHITE_679e0a29-4b41-47cc-ab05-438727cbef57.jpg?v=1759189425"},{"product_id":"gsc-intake-valve-guides-set-of-12-subaru-ez30-gsc3126-12","title":"GSC Intake Valve Guides Set of 12","description":"\u003cp\u003eGSC P-D Subaru EZ30 PHZ 2 1.34in Len .345in Protrusion Intake Valve Guide Stopper Style - Set of 12.\u003c\/p\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":51976899002671,"sku":"GSC3126-12","price":159.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/8047b85e2d0a7e2aa7315847a47aef40.jpg?v=1761879507"}],"url":"https:\/\/www.prospeedracing.com.au\/collections\/gsc-in-stock.oembed","provider":"Pro Speed Racing","version":"1.0","type":"link"}