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SKU: 31013-BF001 | UPC: 4957266931356
HKS 02-07 WRX / 04-07 STi Sport Exhaust
This HKS Hi-Power SPEC-L cat-back exhaust system fits 2002-2007 Subaru Impreza WRX and 2004-2007 Impreza WRX STI models. It replaces the factory muffler and piping for smoother exhaust flow that increases horsepower and torque. Drivers experience a deep aggressive exhaust tone at 97dB while shedding weight for sharper handling.
Key Features
- SUS304 Stainless Steel Build: Full construction from premium Japanese stainless steel delivers corrosion resistance and enduring strength against heat and road conditions
- Mandrel-Bent Piping: 60.5mm to 80mm x2 to 60.5mm diameters ensure unrestricted flow improved scavenging and measurable power gains on dyno tests
- 120mm Single Oval Tip: Rolled-edge design exits with a bold visual stance and contributes to the tuned resonance without excessive drone
- Lightweight 13.0kg Design: Cuts 2.8kg from stock 15.8kg setup to lower center of gravity and enhance vehicle response
- 97dB Sound Tuning: Balances track-ready volume with street drivability for thrilling note during acceleration
Product Notes
- Direct replacement from catalytic converter back with included gaskets and bolts
- Inspect exhaust routing before install to confirm no interference
- Packaged for protection during transit with custom-fit foam inserts
Installation Notes
- Professional installation recommended.
- Bolts to factory catalytic converter outlet using stock mounting points
- Compatible with OEM rubber hangers no fabrication or welding needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
Why Choose HKS?
- Decades of motorsport development since 1973 shapes every component
- Dyno and real-world track validation confirms power and sound delivery
- Exact engineering tolerances match OEM specs for seamless integration
Frequently Asked Questions
-
Q: Does this exhaust fit 2002-2005 WRX sedan and wagon?
A: Yes it bolts on to both sedan and wagon variants for 2002-2007 WRX models without modifications -
Q: What material and pipe specs are used?
A: SUS304 stainless steel with mandrel-bent 60.5-80x2-60.5mm piping and 120mm oval tip -
Q: What warranty covers this part?
A: HKS provides a 1-year limited warranty against manufacturing defects with proper installation
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Original HKS box 55 x 15 x 15 inches
- Weight: 28.6 lbs (13.0 kg)
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