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Downpipe - Alpha Performance Widemouth Downpipe (R35 GT-R)
Downpipe - Alpha Performance Widemouth Downpipe (R35 GT-R)

The Alpha 90mm Cast Widemouth Downpipes are the best performing and most durable downpipes available on the market. Unlike most downpipe systems that use 76mm (3”) downpipes that can cause unnecessary back pressure, the Alpha 90mm cast Widemouth Downpipes use a larger 3.5" primary pipe to optimize exhaust gas flow, freeing up horsepower, while improving spool time and throttle response. Cast from 304 Stainless Steel, these downpipes do not include welded seams which are prone to cracking/failure, which can be found on the competitor's products.

Combined with unrivaled fit, finish, durability and performance you can enjoy for the life of the car, the Alpha 90mm Widemouth Downpipes will support any future modification, and will bolt up to the stock midpipe or most aftermarket exhaust systems.

During testing on AMS's Omega GTR with Alpha upgraded turbos, gains of 100WHP and over 130ft/lbs torque could be seen with this simple bolt-on!

  • (2) 90MM Alpha Cast Downpipes
  • Downpipe to bracket hardware
  • Downpipe to Midpipe gaskets
Our Price: $999.95

Availability:: Usually Ships in 2 to 3 Business Days
Product Code: AMS-GTR-WIDEDP

Downpipe Gaskets:

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!

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