Injen Technology has examined the stock down-pipe and found prominent potential on improving the OE design by using mandrel bent stainless steel for optimum flow and corrosion resistance. TIG-welded by hand for race proven durability and endurance and eliminating any possibility of cracking during heat cycles. All of the Injen downpipes are uniquely designed to increase exhaust velocity for improved horsepower and torque. Just like all of our other performance parts, we dyno test our Down Pipes in-house and proudly build them in Pomona, CA.
Note: This Part kit is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.
Direct fit for the
2002-2005 Subaru Impreza WRX / Sti H4-2.0L Turbo
2004-2007 Subaru Impreza WRX Sti H4-2.5L Turbo
2006-2007 Subaru Impreza WRX H4-2.5L Turbo Dyno Proven gains of up to 12 hp and 12 lb-ft. of torque
TIG-Welded for Strength and Durability
304 Stainless Steel Tubing
Designed and Made in Pomona, CA
Prop 65 Compliance
This product can expose you to chemicals including Chromium, Nickel & Cobalt, which are known to the State of California to cause cancer.