HKS Super Turbo Cat Back Exhaust Subaru WRX / STI 2015-2021 | 31029-AF011 Type_Turbo Outlets / O2 Housing Technical assistance and tuning data

Technical assistance and tuning data available via phone or email

Making around 400whp

Efficiently reduces heat

The horsepower range for the GSC Stage 1 camshaft set is 350-500whp

HKS Super Turbo Cat Back Exhaust Subaru WRX / STI 2015-2021 | 31029-AF011 Type_Turbo Outlets / O2 Housing Technical assistance and tuning dataFitment Information: 2015 2021 Subaru WRX 2015 2021 Subaru STI Features: 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 Specs: