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The Alpha Nissan GT-R 90mm Cast Widemouth Downpipes are the best performing and most durable on the market. During testing our shop GT-R with Alpha upgraded turbos saw gains across the power band of 100 wheel horsepower and over 130 ft lbs of torque with this simple bolt-on! Turbo spool-up was also improved by almost 400rpm!
Unparalleled Durability and Performance through Proper Engineering
Our downpipes perform better and are not prone to cracking like the alternatives offered by the competition. Their versions have many welded seams which are prone to failure.
By casting these downpipes in robust 304 Stainless Steel we were not limited by the design restraints of hand fabricated construction. The AMS engineering team utilized Solidworks (3D CAD software) to blueprint the inlet and outlets with smoother features and geometry to optimize exhaust flow. They also provided thick flanges to prevent exhaust leaks and utilize the factory mounting hardware for OEM like fitment.
Most other systems implement 76mm (3”) downpipes that can cause unnecessary backpressure. By using a larger 90mm (3.5”) primary pipe we were able to optimize exhaust gas flow, freeing up horsepower while improving spool time and throttle response.
An exhaust note that is music to your ears
AMS Widemouth Downpipes offer a more pronounced, throaty exhaust note under wide open throttle yet are subdued at idle and while cruising. A perfectly balanced sound for the ultimate all around supercar!
Buy it once; enjoy it for the life of thecar
The Alpha Nissan GT-R 90mm Widemouth Downpipes will easily support any future modifications. Combined with unrivaled fit, finish, durability and performance you can enjoy them for the life of the car.
The Alpha Widemouth Downpipes are the ideal balance of appropriate sizing and geometry resulting in a perfect equilibrium of performance, sound and fitment.
Do it right the first time, order your Alpha Widemouth Downpipes today!
Features and Benefits
Big horsepower increases throughout the powerband
Improved turbo spool and throttle response
Cast construction offers added performance and reliability over the competition
Pronounced, throaty exhaust note under wide open throttle yet is subdued at idle and while cruising
Large 90mm (3.5”) primary section for optimal exhaust flow
Stock like fitment with no chassis clearance issues
Bolts up to the stock mid-pipe or most aftermarket systems
Precision TIG welded with unrivaled fit and finish
Technical Specifications
100% 304 stainless steel cast inlet and outlet
100% 304 stainless steel center pipe with .065” wall thickness
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| SKU:
ALP.07.05.0001-1
