aFe Power

aFe power introduces an all new Twisted Steel Header for the 2004-2019 Subaru WRX STI with H4-2.5L engine. In testing, this header produced a max...

Long Tube Headers:Air Injection:The headers are designed to retain the factory air injection giving you provisions for all factory emissions equ...

aFe POWER Twisted Steel down-pipe w/ Cat for the Subaru WRX STI 2015-2020 with H4-2.5L engine. This down-pipe is designed using a 400 CPSI cataly...

High Flow Catalytic Converter:This down-pipe utilizes a 400 CPSI (cell per square inch) catalytic converter for maximum flow. Factory Mounting Lo...

TIG Welded:100% TIG welded by certified craftsmen for race proven strength and durability. TIG welding provides the strongest welds reducing stre...

3 IN to 2-1/2 IN 304 Stainless Steel Construction:This cat-back exhaust system is constructed of 3 IN to 2-1/2 IN mandrel-bent brushed finished 304...

Long Tube Headers:Formed Collectors:4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower...

Race Version:This down-pipe was designed as a "Race" version for added performance and a more aggressive sound. Factory Mounting Locations:The do...

Performance Gains:This system produced gains of up to +7 HP and +5 lbs. x Ft. TQ., as measured on our in-house dyno. 3 IN to 2-1/2 IN 304 Stainless...