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. 

* WE DO NOT RECOMMNED USING AFTER MARKET ADAPTERS *
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
Weight	Stainless Steel Muffler (RK-C1076S-01) = 23.6 lbs Titanium Muffler (RK-C1076S-01T) = 20.3 lbs See diagram below for details
Shipping Dims	w/ Stainless Steel Muffler Canister - 54x19x9" , 36 lbs. w/ Titanium Muffler Canister - 54x19x9" , 32 lbs,.