HKS downpipe replace the factory downpipe and 2 catalytic converter and significantly improve exhaust flow. HKS downpipes are manufactured using aluminized steel and treated with high-temperature titanium particle coating. HKS downpipes are for race use only. HKS 75mm Racing Downpipe (Stainless Steel/Coated) for Subaru Impreza WRX 02-06 (STI Included).
Note: Works with Stock Turbo w/ HKS Exhaust - Eliminates (2) Rear Cats (Off-Road Use Only)
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