Axleback (Boso Edition) - Subaru WRX/STI VA [2015-2021]


$475.00 USD

Shipping calculated at checkout

International Shipping Now Available

Price calculated at checkout. Please note: this cost does not include any customs/ import related fees which will be billed directly to buyer by carrier.

Inspired by the Japanese, Bōsōzoku style. 

They are the outlaws of Japan, and known as the "Violent Speed Gang".
The outrageous styling, and designs of their JDM vehicles are very iconic with the huge exhaust system and very LOUD aggressive tone. 

Updated late October 2018 (It will fit 2019+ models)

*This product does not work with OEM Factory SPT Midpipe.
* This product are not interchangeable with Sports Touring Catback Exhaust.
Click here for more info



Part Number  Tip Options
RO-TSVA-SL Stainless Steel Boso
RO-TTVA-SL Burnt Stainless Boso
RO-TBVA-DL Burnt Blue Stainless Boso

Year / Make / Model
  • 2015-2021 Subaru WRX/STI (VA)
  • Direct bolt-on easy installation to the factory OEM or Remark mid Y-pipe (Please note : this product will NOT fit aftermarket exhaust system)
Exhaust Type  Axle Back Exhaust Bolt on 2pc 
Piping Diameter 2.5inch, 16 gauge, mandrel bent pipe
Tip Diameter
  • Ultra aggressive 3.5inch tip design slant style tips
  • LOUD aggressive tone 
  • Sold in pairs (4 tips total)
Piping Material  T304 stainless steel
Tip Material T304 stainless steel
Process Hand crafted high quality tig welding
Weight  Optimal weight reduction from the factory mufflers
⚠️ WARNING: California Prop 65
Cancer & Reproductive Harm
- Free Shipping to Continental US (Lower 48 States) 
- REMARK Limited Warranty

** Eligible for purchases direct from
** Excludes taxes and duties on international orders
** No Returns or Exchanges accepted 
** Read disclaimer before purchasing: Click here to read

Customer Reviews

Based on 4 reviews

Super easy to install. took me 30 min and sounds amazing. deep low sound not like a high pitched honda 👍🏽. also took 3/4 days to get to me. super quick.

Best Sounding Axelback Option!

After a lot of research for an axel-back for my 2015 I came across these on YouTube. Thought "wow, these ACTUALLY sound pretty good." Nothing too raspy, can hear all the nice pops, even a little bit of turbo whistle. First thing I noticed when opening was the incredible build quality. Really nice welds and quality material. Once I installed them for myself and heard them first hand I was blown away! Incredibly clean tone, not too much timbre and hardly any exhaust drone at freeway speeds. Sounds fantastic in the morning btw. None of the videos I came across did the true sound any real justice. If you are considering, you should 100% snag these if they are in stock.

Thank you REMARK for the fantastic product.

100% recommend.

Welp, it’s official. This exhaust sounds amazing. I went from stock, to nameless, to ETS, and now this BOSO. I am absolutely impressed and soooooo glad I made this purchase!!! The tone is “remarkably” deep and the pops are a nice touch. (This video does it nan justice)
I did not notice any more drone than the rest; which is minimal to none.
Thanx REMARK🏎💨


Just got these yesterday and since then theyve been nothing but amazing! Easy install, nice deepish tone and just the perfect volume. Will be ordering a midpipe from you guys someday 👍