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HKS Racing Ti Cat-Back Exhaust - Subaru WRX STI GD

HKS Racing Ti Cat-Back Exhaust - Subaru WRX STI GD

Regular price $859.00 USD $700.94 USD

Availability: In Stock Sold Out

Manufacturer: HKS

SKU: hks31701-BF003


HKS offers the Racing Muffler exhaust systems for high horsepower applications. Constructed of high-luster polished SUS304 stainless steel piping and a 170mm Titanium muffler assembly, the Racing Muffler is the lightest (40% lighter than the race inspired Hi-Power Exhaust system) and the highest flowing exhaust system HKS offers. The muffler utilizes a slip-on design that mates polished stainless steel piping and a lightweight titanium Muffler assembly. All Racing Muffler systems incorporate a 115mm-diameter tip and include a removable inner silencer for pit area use or for tracks that require a lower dB level. HKS Racing Muffler Systems are FOR OFF ROAD USE ONLY.

  • Subaru Impreza WRX [GD] (2002, 2003, 2004, 2005, 2006, 2007)
  • Subaru Impreza WRX STI [GD] (2004, 2005, 2006, 2007)


Titanium Tip and Muffler
SUS304 Stainless steel piping
Perfect mix of quality and affordability
115mm tip with 74.7mm piping
Designed for USDM GD
Made in Japan

Extended Information

Type: Single Cat Back
Material: Titanium Muffler w/ SUS304 piping
Tip Diameter: 115mm
Piping Diameter: 74.7mm
Chassis: GD#
Engine: EJ20, EJ25
Idle Sound: 96dB (82 dB stock)

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Returns Policy

Most items may be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on special order, opened, installed, incomplete, or otherwise used products.

In order to initiate a return, an RMA number must be requested and approved. All returns will be subject to a 15% restocking fee minus complete shipping cost.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.