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aFe Power Twisited Steel Downpipe Street Series - 08-14 WRX / 08-20 STI

aFe power introduces an all new Twisted Steel "Street" Down-Pipe for the Subaru WRX STI 2015-2018 with H4-2.5L engine. This down-pipe is designed using a 400 CPSI catalytic converter and mandrel-bent, 304 stainless steel tubing for optimum flow resulting in added horsepower and torque. The down-pipe is 100% hand TIG-welded and uses a 2-1/2" into 3" stepped design that increases exhaust velocity and eliminates low pressure drops which helps to scavenge the exhaust for increased power. In. . . Show More >

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