BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021 – Import Image Racing
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BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021
BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021
BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021
BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021

BLOX Cat Back Exhaust T304 Subaru WRX / STI 2015-2021

Rated 4.5 out of 5
Based on 4 reviews
SKU: bloBXEX-51001
Availability: Out Of Stock
Product Type: Exhaust Cat Back
$1,164.80
$1,456.00
$1,164.80
Save $291.20

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Regular Price: $1,456.00 - Instant discount: $291.20 = $1,164.80


Subtotal: $1,164.80
Part #: BXEX-51001

BLOX Racing's exhaust system for the 2015+ Subaru WRX is manufactured using complete T304 stainless steel. The 3" cat-back system features mandrel-bent tubing that has been TIG-welded to ensure durability and reliability against cracks and exhaust leaks. The BLOX Racing system exits out of dual, high flow mufflers each with dual tips.

BLOX Racing's cat-back system provides power and torque, while maintaining a suitable exhaust note.


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.



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average rating 4.5 out of 5
Based on 4 reviews
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100% of reviewers would recommend this product to a friend
Review posted
Reviewed by Brandon W.
Verified Buyer
Rated 5 out of 5

great sound

the only issue are the cheap clamps had to go buy 3 and it was good to go no leaks great fit

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Reviewed by Nathan W.
Verified Buyer
Rated 4 out of 5

Great product

This product is very high quality, great tone, and my neighbors can now sleep in now that I switched to this from my straights.

I’m running An invidia catless downpipe with this non resonated exhaust and it has a humble rumble. This product absolutely deserved 5 stars but one thing was missing that held it back.

The mid pipes holes were too large for the provided hardware to stay in place. The nuts just slipped right through the hole (that’s what she said lol). So I found myself at Home Depot at 6am picking up 1/2” washers to secure the down pipe to the mid pipe. The down pipe holes fit the hardware perfectly the washer was only needed to be set n the mid pipe side. Also this kit doesn’t come with the gaskets for the mid to downpipe so pick yourself up one just for a more secure seal. However, The mufflers did come with gaskets 👍🏼. The fasteners secure the exhaust very well just work with it and don’t over tighten.

Overall a simple install for any skill set just make sure you pick up a downpipe gasket and those washers I mentioned. And not to leave out IIR for the amazing communication and shipping, I’m a repeat customer and will continue to shop with you guys ✌🏻

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Review posted
Reviewed by Keith H.
Verified Buyer
Rated 5 out of 5

For the price

If the price wasn't so low here this wouldn't get 5 stars. The exhaust is great, well built, looks great, sounds great (if you don't want an super loud exhaust with drone this is perfect).

The reason it would get less than 5 stars is due to all the clamps being absolute crap, even buying the grimmspeed kit the say you need you are still left needing to go buy another donut gasket. You also need to buy new clamps for ALL the connections because these cant get tight enough to not cause leaks and they break VERY easy.

But once again, with the money you save buying it here for the current price ($650) you can spare the change for clamps and gaskets.

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Review posted
Reviewed by Cavaughn H.
Verified Buyer
Rated 4 out of 5

Blox Exhaust

This is an amazing exhaust from packing to install. However, of the exhaust clap for the muffler is loose no matter how I tighten it.

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