AMS PERFORMANCE R35 GT-R 90MM CATTED MIDPIPE

Alpha R35 GT-R 90mm Catted Midpipe 

The Alpha R35 GT-R 90mm Catted Midpipe stands out as one of the largest available, offering superior exhaust gas flow optimization. Unlike typical systems with two 76mm (3”) pipes merging into a single 76mm (3”) primary pipe, ours features a larger 90mm (3.5”) primary pipe. This design minimizes turbulence and back pressure, unlocking horsepower and enhancing turbo response.

Remain Compliant With No Loss Of Horsepower 

To ensure your R35 GT-R meets state and local emissions standards, our midpipe features high-flow catalytic converters, EPA-certified in 49 states. The GESI Ultra High Output (UHO) stainless steel cats provide superior emissions control without sacrificing horsepower. With the Alpha 90mm Catted Midpipe, your GT-R maintains straight pipe performance while staying compliant. Engineered for racing, these cats withstand extreme conditions, enduring temperatures up to 1500°F without rattling loose after repeated heat cycles and heavy driving.

Superior Construction. No Compromises 

Crafted with precision and excellence, the Alpha R35 GT-R 90mm Catted Midpipe ensures unparalleled fit, finish, and performance. Made from premium stainless steel, each component is meticulously TIG welded by our AMS master fabricators. Alongside top-grade catalytic converters, we incorporate high-quality stainless steel flex sections and 3/8” thick connecting flanges, guaranteeing durability throughout your GT-R's lifetime.

Do it right the first time, order your Alpha GT-R Mid-pipe today! 

Exclusive Benefits 

• Large 90mm (3.5”) primary section for optimal exhaust flow 
• GESI Ultra high output race catalytic converters – ideal for forced induction 
• EPA Certified high output catalytic converters for use on OBDII vehicles (1996 and newer) – Certified in 49 states! 
• Unique end-cap design catalytic converters locks substrate in so it can not rattle around 
• 100% stainless steel construction. No mild steel flanges or hangers 
• Precision TIG welded by AMS master fabricators 
• Twin 76mm (3”) stainless steel flex sections with smooth bore liners 
• All 3/8” flanged connections. No band clamps or slip fits to come loose 
• Stock-like fitment and no ground clearance issues 
• Bolts up to the stock downpipes and muffler back exhaust or most aftermarket systems 
• Includes gaskets and hardware 
• Unrivaled fit and finish 

Kit Includes 

• 90mm midpipe 
• Gaskets and hardware 

Specifications 

• 100% 304 stainless steel with .049” wall thickness 
• Twin 76mm (3”) inlets Y into 90mm (3.5”) primary pipe 
• Twin 76mm (3”) stainless steel flex sections 
• Twin 76mm (3”) stainless steel catalytic converters 
• 3/8″ thick stainless steel flanges 

Applications 

• 2009 and up Nissan GT-R 
• Fits all USDM Models, European and JDM models.