R1-Spec Catback Exhaust - Subaru WRX/STI VA [2015-2021]


$855.00 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.

R1-Spec catback exhaust system was developed for those seeking maximum performance gains. This single exit catback exhaust system reduces back pressure restriction, and offers significant weight savings. The 3 inch diameter piping and low restriction layout helps the exhaust system breath by reducing exhaust gas back pressure. Our high flow straight through muffler canister creates an aggressive tone which might wake the neighbors but fits in perfectly while at the track, The large 4.5 inch slant cut tip matches the performance nature of the system. The muffler canister is available in Full Titanium construction or Stainless steel construction. Both variants include 304 stainless steeling piping and flanges. 
Designed and manufactured for the hardcore enthusiasts. Inspired and designed for the track ready Subaru WRX/STI VA. 

Using adapters may cause incorrect fitments.
- Remove factory donut gasket with this product.

Part Number  Options
RK-C1076S-01 Stainless Steel
RK-C1076S-01T Titanium
Chassis / Engine
  • 2015~2021 Subaru WRX/STi VA
  • The updated 2019~2021 WRX/STI VA is compatible
Exhaust Type  Catback exhaust 2pc design
Piping Diameter Full 3inch piping
Tip Diameter
  • Large single 4.5inch tip design slant-cut tip design

  • Laser engraved logo

Midpipe Material *Midpipe section only comes in T304 Stainless Steel
Muffler Material T304 stainless steel or Titanium
Muffler Tip Material T304 stainless steel or Titanium
Welding  Hand crafted high quality tig welding
  • Stainless Steel Muffler (RK-C1076S-01) = 23.6 lbs
  • Titanium Muffler (RK-C1076S-01T) = 20.3 lbs
  • See diagram below for details
- Free Shipping to Continental US (Lower 48 States) 
- REMARK Limited Warranty
** R1-Spec Exhaust systems are designed for performance based builds, so it will be LOUDER than other systems
** Covered for purchases direct from www.remark-usa.com
** No Returns or Exchanges accepted 
** Excludes taxes and duties on international orders
** Read disclaimer before purchasing: Click here to read 

Customer Reviews

Based on 4 reviews
Jason Sanabria
Beautiful work

Love the exhaust. Actually bought 2 for both my STi and WRX. Need a replacement part though not sure where to find. Wife smashed one the mufflers :-(


This exhaust could not have sounded better. I bought the titanium muffler option and are pleased to say that I have no regrets. Not only the sound, but the look is aggressive too. Great sound at all RPM's.

Unlike the rest

I bought this on what could be called impulse and I’m glad I did. I had the Remark double wall quad tip w/ mid pipe prior to this and I have to say the sound is pretty different in the right ways. Under throttle it’s not significantly different than any other catback, but the lower rpms are where this really seems to differentiate itself from others. It’s a lower overall note that sort of reminds you of UEL’s. I really like it. The titanium looks amazing and the installation I think was simpler by virtue of having less flanges to connect.

Love it!

Sounds loud and great!
Looks badass and price point is perfect!
I have a catted down-pipe on my STI with the R1s.