Replacement For 2015-2021 Subaru WRX STi STAINLESS STEEL POLISHED SILVER Muffler Axle Back 4" Double Wall Blue Burnt Quad Tips Exhaust
Condition: New
Buy Now, Pay Later
As low as
$48.33
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
11 left in stock
Arrives
Mar 22 – Mar 26
Recently Viewed
![[Set of 2] SunF 22x10-8 22x10x8 ATV UTV A/T Knobby Race Replacement 6 PR Tubeless Tire A030](https://m.media-amazon.com/images/I/812y+WMvyHL._AC_US500_.jpg)
Features
- Fits All 2015-2021 Subaru WRX | WRX STi Models ( Does Not Work with Aftermarket Exhaust System or SPT Mid Pipe )
- 100 % Brand New Condition, A Brand-New, Unused, Unopened, Undamaged Item in its Original Packaging (Where Packaging is Applicable).
- Package is Included with 1 X Pair of Subaru WRX STi Stainless Steel Double Wall Quad Burnt Tips Axle Back Exhaust ( Left & Right ), 2 X Pair of Hangers ( Left & Right ), 1 X Pair of Gasket ( Left & Right ) & 2 X Pair of Nut & Bolt ( Left & Right )
- Test Fitted Prior Shipment to Ensure Fitment Issue ( Guarantee to Fit ) - Does Not Fit With Aftermarket Exhaust System or SPT Mid Pipe
Brand: Extreme Online Store
Material: Stainless Steel
Vehicle Service Type: Fits ALL 2015-2021 Subaru WRX | WRX STi Models ( Does NOT Work with Aftermarket Exhaust System or SPT Mid Pipe ) See more
Item Weight: 20 Pounds
Shape: Round
Brand: Extreme Online Store
Vehicle Service Type: Fits ALL 2015-2021 Subaru WRX | WRX STi Models ( Does NOT Work with Aftermarket Exhaust System or SPT Mid Pipe )
Shape: Round
Inlet Connection Size: 4 Inches
Outlet Connection Size: 4 Inches
UPC: 810044873412
Manufacturer: Extreme Online Store
Item Weight: 20 pounds
Item model number: EXT-MD002-BT
Is Discontinued By Manufacturer: No
Exterior: Smooth
Manufacturer Part Number: WSA-EXT-MD002-BT
Date First Available: November 25, 2017
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Mar 22 – Mar 26
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Great sound. Fairy easy to install. Recommend lubricating the rubber pieces used to hand the 2 arms on each pipe. Much easier to install. I needed to cut one off of each side to get off. Definitely worth the price. I get many compliments on the sound. Not too loud and no pops!
Reviewed in the United States on December 17, 2025 by Jeff
Had my 2017 WRX for about 6 months, bought this exhaust a week ago and it’s been chilling in my trunk, just put it on yesterday! Welds are fabulous, no damage, easy fit, simple install, and did it by myself. Took about an hour and a half. It only took me that long because getting the bolts off were tough and I didn’t have all the correct sized wrenches ready at hand, sifted through the garage for about 30 minutes looking for the correct tools. But all I used were 2 wrenches 9/16, 5/8, and some WD-40 (don’t exactly remember all the sizes). I did this all with the car on the ground, no jacks, I’m small so I could fit under there lol. But okay real review time, after I fitted everything and bolted it down, then started it up and man, completely changed the sound of the car, much deeper tone and louder. Car used to idle at 1800 rpm after startup, now idles at 1000-1500. When you give it gas, you’ll 100% HEAR THE DIFFERENCE! And YES, you will get pops and gurgle noises! Every time I shift to 4th gear it pops and depending how much gas I give it the pop is louder:), same for 5th, haven’t been on the interstate yet. Also, Everytime I downshift it gurgles and sizzles, I love it. It’s worth the buy for your first exhaust mod!
...
show more
Reviewed in the United States on March 17, 2024 by Steven hogan Steven hogan
The media could not be loaded. Sounds excellent, finish looks amazing. I was going to return it bc I was worried it would be too obnoxiously loud and wasn’t interested in upsetting neighbors when I cold start at 3am for work lol. But decided to go ahead and install it and I’m glad I did. The sound is only louder during cold start n once it idles down to normal it’s pretty quiet. I drove it around a little bit and went into a parking garage and it definitely puts a smile on my face hearing that crackling when rev matching and the pop when shifting. Definitely going to keep me entertained for a while haha. The fit was perfect. instructions said to have 2 ppl, one to align and one to tighten the bolts. I was able to do it alone in less than 30 mins. Jacked it up under the rear differential and just removed the old mufflers and rubber hangers, factory bolts are 14mm the new is a 15 and 16mm. Put the new one on and just finger tightened the bolts n gave them just enough to keep it from moving while I made sure it was aligned n once I knew it was I went ahead and finished tightening. The welds are literally perfect imo. Like others have stated, get it while it’s more affordable than other big name brands.
...
show more
Reviewed in the United States on September 25, 2023 by Wayne Wayne
Hands down i am impressed with these.. i instslled on a 2017 subaru sti and it sounds very very good not to loud nice rumble and already have people saying wow that sounds incredible i was impressed by the welds and fitment i had them installed in about 30 mins flat the quality so far passed my exspectation by a long shot... its truly truly worth it
...
show more
Reviewed in the United States on November 15, 2025 by Pen Name
Really happy with this exhaust, it wasn't hard to install on my 2018 WRX, it looks nice and have my car sound but not annoyingly loud
Reviewed in the United States on May 15, 2025 by Tara
Easy to install, fit well, and sound decent for only $300. Looks good too
Reviewed in the United States on November 29, 2023 by SA
The media could not be loaded. 2020 WRX. A great deal for the money! Fits perfectly! Comes with everything you need and fits like a glove. Clearly made by guys who care about what they are doing and make of affordable. Thank you guys! Installation is easy if you know just a little bit about what you’re doing. The hardest part is actually your stock bolts. After you chew that, it’s a pleasure to work with. Sounds just awesome! Not too loud, but rumbles like it belongs there.
...
show more
Reviewed in the United States on September 22, 2023 by Nika Blinder Nika Blinder
The media could not be loaded. I won't lie, I found this exhaust thru a Facebook ad and was suspicious but after I looked at remark and other brands axel back exhausts I couldnt get over the price of this one! Shipping was quick (under a week) and when it came I inspected the welds and was surprised with how good they were. Install was really easy, did it in about 40 mins by myself, hardest part was breaking the rusty bolts (still not that hard) and getting the stock muffler off the hangers. Overall, I'm more then happy with this axel back exhaust. Adds a great sound, and amazing look to your WRX, plus it was so much more affordable then other brands.
...
show more
Reviewed in the United States on September 27, 2021 by Joshuah L. Joshuah L.