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HKS Hi-Power Cat Back Exhaust Subaru WRX / STI 2002-2007

Rated 4.9 out of 5
Based on 13 reviews
HKS
hks3106-EX008
40 In stock
Exhaust Cat Back

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$560.00 $465.00
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$465.00
Part #: 3106-EX008

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.
average rating 4.9 out of 5
Based on 13 reviews
  • 5 Stars
    12 Reviews
  • 4 Stars
    1 Review
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
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    0 Reviews
100% of reviewers would recommend this product to a friend
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13 Reviews
Reviewed by Jaden S.
Verified Buyer
I recommend this product
Rated 4 out of 5
Review posted

HKS exhaust

Sounds awesome! I wanted something a bit more practical and clean sounding than a Tomei, and this works great. One star off because of the mounting - it doesn't fit with the stock STI underbelly diffuser, I had to chop off a strip of it.

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Reviewed by Parker W.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Best catback for the price

Looks awesome, fits great, has an awesome rumble sound, but isn't excessively loud. At $500 its the best bang for your buck for sure.

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Reviewed by Austyn C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Hks exhaust

I like that this exhaust isn’t too loud and obnoxious I absolutely love the way it fit on my 2.5rs looks 👍🏽 good.

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Reviewed by John F.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Nice sound

put this on my 06 STI. Gives it a great sound and is not "loud". running stock DP. bought the Grimmspeed exhaust adapter and it made the exhaust hit the sway bar. Ended up not using the adapter.

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Reviewed by Bryan G., from United States
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Beautiful Exhaust 05 wrx

I wanted to change the cat less downpipe and some kind of ebay cat back on my 05 wrx that came with the car. I went for a cobb gesi catted downpipe and this hks hi power exhaust and wow...I love that low rumble sound and how the exhaust angles. Its not really loud its more neighborhood HOA friendly but if WOT...it sounds mean...The fitment is spot on. also for the exhaust hangers i used 2 extended on the mid pipe and on the axleback i used 2 standards.

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HKS Hi-Power Cat Back Exhaust Subaru WRX / STI 2002-2007
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