REMARK R1-Spec Catback Exhaust
Not sure which option fits your application? Contact Us — we're happy to help.
REMARK R1-Spec Catback Exhaust - Subaru Impreza WRX/STI (GRB) - Stainless Steel
The REMARK R1-Spec is a single-exit cat-back exhaust for the GR-chassis Impreza WRX STI hatch and the later WRX hatch. It replaces the factory midpipe and dual-exit rear mufflers with 76mm (3") piping and one straight-through R1-Spec muffler finished with a large 114mm (4.5") slant-cut tip. R1-Spec is REMARK's loudest exhaust range, built for performance-focused cars, so expect a much louder note than the factory system and REMARK's other designs.
Video
Product video – REMARK R1-Spec cat-back on a Subaru WRX STI GR hatch
Sound clip – R1-Spec cat-back on a WRX STI GR hatch
Two muffler options are offered. The stainless steel version (RK-C1076S-02) has a T304 stainless muffler and polished tip, with a total weight of about 11.3 kg (25 lb). The titanium version (RK-C1076S-02T) uses a titanium muffler and tip, bringing the system down to about 9.1 kg (20 lb). The midpipe is T304 stainless on both.
Note: Only fits cars with the factory dual-exit, quad-tip rear bumper and muffler. It will not fit a car whose bumper is shaped for a single exit. R1-Spec is REMARK's loudest system. On cars with an aftermarket rear sway bar, extended hangers may be needed for clearance. Installation by a professional is recommended.
Features
- 76mm (3") piping from the downpipe back
- REMARK R1-Spec straight-through muffler
- Large 114mm (4.5") slant-cut tip with laser-engraved logo
- Choice of T304 stainless or titanium muffler and tip
- T304 stainless midpipe
- Hand TIG-welded
- Slip-on muffler hanger brackets
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Subaru | WRX STI hatch | GR (GRB) | 2008–2014 | EJ257 2.5L turbo – hatch only |
| Subaru | WRX hatch | GR | 2011–2014 | EJ255 2.5L turbo – wide-body hatch with factory dual-exit quad tips only (not 2008–2010 GH) |
Product
- Brand
- REMARK
- Part number(s)
- RK-C1076S-02 (Stainless Steel), RK-C1076S-02T (Titanium)
Details
- Product
- R1-Spec cat-back exhaust
- System type
- Cat-back, single exit
- Piping diameter
- 76mm (3")
- Muffler
- REMARK R1-Spec straight-through muffler
- Tip
- Single 114mm (4.5") slant-cut, laser-engraved logo
- Midpipe material
- T304 stainless steel (both options)
- Muffler and tip material
- T304 stainless steel or titanium (by option)
- Construction
- Hand TIG-welded
- Weight
- Stainless: approx. 11.3 kg (25 lb), muffler 4.5 kg (10 lb); Titanium: approx. 9.1 kg (20 lb), muffler 2.3 kg (5 lb)
- Sound level
- Loudest REMARK range (R1-Spec)
- Connection
- Bolts to the factory downpipe, no adapter needed
Contents
Front midpipe section
Rear midpipe section
Muffler canister (stainless or titanium)
Long and short muffler hanger brackets
Gaskets
76mm (3") piping clamp
M10 and M8 bolts and nuts

Need Help Finding the Right Part?
We’ll Track It Down for You
We know how frustrating it can be searching for the right part. If it’s not listed on our site, that doesn’t mean we can’t source it.
Fill out the quick form below and our team will track it down for you.

