The HKS Hi-Power WRX & STI Catback Exhaust features 3in coated mild steel piping and a stainless steel angled-exit Hi-Power muffler for true JDM look and sound. The HKS Hi-Power's full straight, 3in piping and free-flowing muffler reduce backpressure and create significant performance gains while giving your WRX or STI a deep, throaty exhaust tone.
FITMENT: 02-07 WRX & 04-07 STi
Part Number: 3106-EX008
Note: 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.
Im very impressed with the HKS exhaust. Its not over the top loud but still sounds amazing. Definitely can feel better throttle reaponse and more power. Fitment was on point and install wasnt too bad. Shipping only took 2 days too.
Got here right on time and looks amazing
Love the cat back sounds really good and very fast shipping.