02-07 WRX & STi HKS Flat Flange Catless Down-Pipe

02-07 WRX & STi HKS Flat Flange Catless Down-Pipe

$236.25

FITMENT:

  • Subaru STI 2004-2007
  • Subaru WRX 2002-2007

The HKS 33006-BF001 downpipe is designed as a simple, cheap solution which eliminates both catalytic converters on your 02-07 WRX or STI and features 3" piping for improved flow. While the HKS flat flange downpipe will improve performance, we do not recommend it for anything other than a stock turbo, due to the flat-plate design that creates wastegate turbulence. This turbulence does help reduce boost spiking in 2.5L Subaru. The 3" with a flat rear flange is designed to accommodate 3" aftermarket catback exhausts.

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