HKS 75mm DOWNPIPE: RX7 TURBO 87-91 (STOCK OR SPORT TURBO)

HKS 75mm Racing Downpipe for Mazda RX7 Turbo 87-9. Note: Stock & Sport Turbo, Eliminates Pre-Cat - *Requires flange modification for use with stock main Cat.* (Off-Road Use Only) For maximum exhaust flow and increased turbo spool up, HKS offers Off-Road down pipes and front pipes for race use. Each 75mm mandrel down pipe and front pipe is a bolt on application that will mount to the stock turbo and to HKS turbo upgrade kits. Note: Works with Stock & Sport Turbo, Eliminates Pre-Cat - *Requires flange modification for use with stock main Cat.* (Off-Road Use Only)