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SKU: 31008-BF003 | UPC: 4957266931950
HKS Racing Cat Back Exhaust 2011-2014 Subaru WRX STI
This HKS Racing Cat Back Exhaust replaces the OEM system on 2011-2014 Subaru Impreza WRX and STI sedans. Mandrel-bent piping reduces turbulence for quicker throttle response and gains of 12 horsepower plus 10 lb-ft torque from dyno tests. The full system weighs 15.5 kg versus OEM 19 kg for better handling and acceleration.
Key Features
- SUS304 Stainless Steel Construction: Durable piping with 80mm diameter and 1.2mm wall thickness resists rust finished in black coating for heat protection.
- Single Titanium Tip: 115mm polished inlet with titanium sleeve adds aggressive exhaust note and visual appeal.
- Weight Reduction: Lightens exhaust by 3.5 kg compared to stock improving vehicle balance and power delivery.
- Smooth Mandrel Bends: Minimizes flow restrictions boosting mid-range torque and top-end power on WRX STI engines.
- Bolt-On Design: Includes new gaskets hardware and OEM-position welded hangers for direct fit without body modifications.
Product Notes
- Single-exit configuration designed for sedan models check fitment for hatchback compatibility.
- Polished muffler requires periodic cleaning to maintain finish.
- Large item ships freight or UPS oversized requires tailgate delivery option.
Installation Notes
- Professional installation recommended.
- Bolt-on replacement uses OEM hanger locations detailed instructions available.
- All necessary gaskets and stainless hardware included for secure mounting.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2014 | Subaru | Impreza | WRX Sedan |
| 2011-2014 | Subaru | Impreza | WRX STI Sedan |
Why Choose HKS?
- Decades of JDM tuning experience with proven results in motorsport.
- Dyno-tested performance data backs every exhaust design.
- Precision engineering ensures exact fitment and reliable longevity.
Frequently Asked Questions
-
Q: Will this exhaust fit 2011-2014 WRX STI hatchback models?
A: Designed specifically for sedan chassis direct fit may require adaptation for hatchback confirm with install guide. -
Q: What materials are used in construction?
A: Full SUS304 stainless steel piping muffler and hardware with black heat-resistant coating and titanium tip. -
Q: Is professional installation required?
A: Bolt-on system includes all parts but alignment and torque specs benefit from shop expertise to avoid leaks.
Shipping & Handling
- Method: UPS Ground or Freight
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed dimensions 48 x 16 x 16 inches
- Weight: 38 lbs shipping
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