2015-2021 Subaru WRX
2015-2021 Subaru STI
- Improved throttle response with reduced turbo lag
- Effective on stock to high performance vehicles w/ upgraded turbines.
- The performance exhaust sound meets the JASMA standard.
- Unique exhaust sound designed specifically for the engine.
- Upgrades both the horsepower and sound of your vehicle
- Made from premium quality materials
- Ensures reliable operation for years to come
- Material: 304 Stainless Steel
- 3" to split 2.4" piping
- Two 4.9" exhaust tips
- 85dB vs stock 78dB (both are 60dB at idle)
- Polished Tips
Not just powerful performance with quiet sound! HKS designed this cat back exhaust to result in a dry sporty exhaust sound that can be heard inside the vehicle at the step of a pedal. In pursuit of the ideal exhaust system, they used a 75mm straight structure which generates the lowest exhaust pressure while maintaining comfort inside the vehicle.
Are you using a stock j pipe or downpipe? If yes, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046
, is required.