HKS Hi-Power Cat Back Exhaust - Subaru WRX/STI 2015+
Manufacturer Part # 31006-BF001
Bundle Savings:MSRP: $1,300.00
As low as $1,659.96
HKS knows how to develop exhaust systems to better suit turbocharged platforms. The increased piping diameter, straighter piping design, as well as the high flow muffler attribute to more power and improved performance.
Additionally you will gain the benefits of a more aggressive exhaust tone under acceleration.
The HKS Hi-Power Cat Back Exhaust System features full 75mm piping, and includes the supplied hardware to make for a ready installation. Also the mufflers include mounting brackets that will fit in the OEM location.
If you’re in the market for an exhaust system that will improve throttle response, increase turbo spool, and improve sound then look no further than an exhaust system provided by the leading pioneers in the JDM high performance parts game. HKS continues to develop products that satisfy the greatest of car enthusiasts. Give your vehicle that extra roar with the HKS Hi-Power Cat Back Exhaust System.
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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KyleTheGrouch 24 days ago
HKS delivered on this exhaust. It’s sound is absolutely amazing! It’s build quality is out of this world. Enough said. PS. THIS DOES NOT REQUIRE THE STOCK DOWNPIPE TO 3in ADAPTER. JUST GET A NEW OEM CRUSH GASKET.
HKS EXHAUST WORTH EVERY PENNY
soprisrida27519 1 year ago
I have had my eye on this exhaust for a long time, constantly watching videos on rallysport just waiting by the side lines to finally pull the trigger, enough was enough and i finally had to do it, and let me tell you what, i REGRET NOTHING, this thing is amazing, it sounds amazing it looks amazing and i can even feel a difference in the throttle response. Windows are always down and i absolutely love everything about this, HKS is a really high quality piece of art and rallysport helped me get everything i needed and shipped to me right away. This is truely what a subaru should sound like
A great exhaust for street or track
Rick C. 2 years ago
Seriously what an awesome exhaust. It looks killer on the back of our 2015 STI and sounds even better! Do not let the canister type design fool you, this exhaust is mild when you're just cruising around, and mean when you mash on the throttle. Fitment is perfect and the quality is a 10.
QUESTIONS & ANSWERS
Q: 2018 STI Cobb Bellmount DP to HKS Hi Power KyleTheGrouch 1 month agoAnswer
Will I need any additional parts to install this with the Cobb Bellmount DP. The DP is 2.5in and this is 3in. Should I purchase an adapter and donut gasket? Please add part numbers if you could.
A: This will not need an adapter to bolt up to the OEM or the Cobb downpipe, you will need a new OEM donut gasket. The product link can be found below. https://www.rallysportdirect.com/part/exhaust-gaskets-and-hardware/sub-44022aa123-subaru-oem-donut-gasket
Jared A. 1 month ago
Q: Volume RayTheCaptain 8 months agoAnswer
Compared to the invidia N1 dual catback exhaust, is this louder or softer? What's a good comparison for cabin volume? And is there any drone?
A: This will be a bit quieter than the N1 exhaust and drone won't be too bad. Best thing to do is listen to sound clips of both exhausts.
Luis L. 8 months ago