{"product_id":"gfb-lightweight-underdrive-3-pulley-kit-subaru-wrx-99-00-sti-99-00-forester-gt-01-02-2002","title":"GFB Lightweight Underdrive 3 Pulley Kit","description":"\u003ca href=\"https:\/\/www.prospeedracing.com.au\/GFB-Lightweight-Underdrive-3-Pulley-Kit-Subaru-WRX-99-00-STI-99-00-Forester-GT-01-02-2002\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e\u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eGFB lightweight pulley kits are made from aircraft-grade 6061-T6 aluminium and offer faster acceleration through significant weight reduction on the crankshaft.\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eMost of our kits are underdriven, which means the accessories are driven slightly slower to reduce parasitic losses. GFB pulley kits are designed to improve acceleration by reducing the rotational mass (inertia) on the crankshaft as well as parasitic loads from the driven accessories. The effect is similar to a lighter flywheel, and the engine feels more lively and willing to rev.\u003c\/span\u003e\u003c\/p\u003e  \u003cp\u003e\u003cspan style=\"font-size: small;\"\u003eWe know that people are sometimes concerned about possible adverse effects of lightweight pulleys and underdriving, but rest assured we have done our homework! The underdrive ratios have been optimised to ensure there are NO adverse effects on the performance of the accessories, and whilst it is true that some engine types do suffer harmonic issues from lightweight pulleys, we steer clear of those. The kits we release are thoroughly application tested and do NOT cause engine damage in the short or long term.\u003c\/span\u003e\u003c\/p\u003e  \u003cdiv\u003e \u003c\/div\u003e  \u003cdiv\u003e \u003cdiv\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/div\u003e  \u003cul\u003e \t\u003cli\u003e(1) Crank Pulley\u003c\/li\u003e \t\u003cli\u003e(1) Alternator Pulley\u003c\/li\u003e \t\u003cli\u003e(1) Power Steering Pulley\u003c\/li\u003e \t\u003cli\u003e(2) Belts\u003c\/li\u003e \u003c\/ul\u003e  \u003cp\u003e \u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e\u003c\/p\u003e  \u003cul\u003e \t\u003cli\u003e1999-2000 Subaru WRX GC8\/GF8 (EJ20)\u003c\/li\u003e \t\u003cli\u003e1999-2000 Subaru STI GC8 (EJ20)\u003c\/li\u003e \t\u003cli\u003e2001-2002 Subaru Forester GT SF (EJ20)\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003ca href=\"https:\/\/www.prospeedracing.com.au\/GFB-Lightweight-Underdrive-3-Pulley-Kit-Subaru-WRX-99-00-STI-99-00-Forester-GT-01-02-2002\" style=\"text-decoration:none\"\u003e \u003c\/a\u003e","brand":"GFB","offers":[{"title":"Default Title","offer_id":48886637625647,"sku":"2002-KIT","price":420.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/3903\/9279\/files\/2002-KIT.jpg?v=1710119502","url":"https:\/\/www.prospeedracing.com.au\/products\/gfb-lightweight-underdrive-3-pulley-kit-subaru-wrx-99-00-sti-99-00-forester-gt-01-02-2002","provider":"Pro Speed Racing","version":"1.0","type":"link"}