HKS Down Pipe

For maximum exhaust flow and quicker turbo spool up, HKS offers downpipes for racing use. Each mandrel bent down pipe is a bolt-on application that will mount to the stock turbo and/or to a HKS turbo upgrade kit. Certain HKS Downpipe applications are made from coated stainless steel or polished SUS304 stainless steel piping. All HKS down pipes are FOR OFF ROAD USE ONLY.


ApplicationPiping Dia. (mm)
MAZDA
RX-7 1987-1991 Turbo (1)75
RX-7 1993-1996 Turbo (2)75
MITSUBISHI
Lancer Evolution 2003 (3)65
SUBARU
Impreza WRX 2001-2003 (4)75
TOYOTA
Supra 1986.5-1992 Turbo (5)75
Supra 1993-1998 Turbo (6)75
Notes
  1. Stock & Sport Turbo, Eliminates Pre-Cat - *Requires flange modification for use with stock main Cat.* (Off-Road Use Only)
  2. Stock Turbos, Eliminates Pre-Cat (Off-Road Use Only)
  3. Polished Stainless Steel
  4. Stock Turbo w/ HKS Exhaust, Eliminates (2) Rear Cats (Off-Road Use Only), Stainless Steel / Coated
  5. Stock & Sport Turbo, Eliminates Pre-Cat (Off-Road Use Only)
  6. Front Pipe - Eliminates Main Cat (Additional O2 sensor fitting required) (Off-Road Use Only)
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