Alpha Performance Cast Downpipes: 2009+ R35 GT-R

Alpha Performance Cast Downpipes: 2009+ R35 GT-R

from 1,329.95

P/N: ALP.07.05.0001-13


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. 

• 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
• Available with or without steel core high flow catalytic converters
• 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


Note: Due to the valvetronic servo that comes standard on 2017 GT-R's, a COBB AP3 or EcuTek is required to clear CEL P26DE.

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