You have no items in your shopping cart.
Agency Power does it again with their catback system for the WRX/STI. This system features full 3" stainless steel polished piping that exits through their fully titanium race muffler. It is completely TIG welded for added strength and durability. Agency Power has seen a 12whp gain typically with this catback and it will bolt up to a stock downpipe or aftermarket downpipe with no issue. Included is all hardware and gaskets for installation.
The catback exhaust will fit to the factory downpipe or aftermarket downpipes/headers. The exhaust has an angled exit as seen in the pictures for that JDM look. The race sound of the exhaust will not drone inside the car but give you that quality tone you desire.
Note: Are you using a stock j pipe or downpipe? If yes, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046, is required.
Also Purchased
Agency Power 5 Speed Short Shifter Subaru WRX 2008-2014 (AP-GH-300)
Agency Power has released their incredible 2008+ Subaru WRX 5 speed short shifter. The shifter is made from 1018 steel that is CNC machined for a smooth finish and precise...
$60.00
Agency Power Up Pipe Subaru WRX 2002-2014 / STI 2004-2019 (AP-GDA-173)
With an amazing exhaust system, it only makes sense for Agency Power to offer their all new uppipe to Subaru WRX and STI owners. This uppipe is made from 321...
$175.00
Agency Power Shifter Bushings for 03-06 EVO 8 + 9 (AP-CT9A-305)
For improved shifter response and feel on your 5-Speed Evo 8 or 9, Agency Power has developed CNC T6061 Aluminium shifter bushings to replace the factory rubber pieces. The split...
$40.00
Agency Power High Flow Fuel Rail Mitsubishi EVO 8 (AP-CT9A-120R)
Agency Power has released their new Mitsubishi EVO VIII and MR fuel rail. This fuel rail is a direct replacement for the factory unit. The CNC machined piece is anodized...
From $130.00
Agency Power Stainless Steel Header Mitsubishi EVO X (AP-CZ4A-175)
Agency Power Stainless Steel Header Mitsubishi EVO X 09+Adding a high quality exhaust header is a great way to gain power for the EVO X. The Agency Power stainless steel...
$600.00
Agency Power Cat Back Exhaust Nissan 370Z 2008-2015 (AP-Z34-170)
Nissan released the 370Z in 2009 as an improved version of the already popular 350Z. Being a performance oriented car, the 370Z was in need of an exhaust with quality,...
$850.00
Agency Power Rear Axle Back Exhaust w/ Ti Tips 2007-2010 BMW 135I (AP-135I-170)
If you are looking to step up the sound, performance, and look of your BMW 135I turbo, then adding the Agency Power axle back muffler exhaust is the answer. The...
$600.00
Agency Power Mid Pipe 2009-2015 Nissan GTR (AP-GTR-173)
Agency Power's mid pipe is a great exhaust upgrade for the Nissan GT-R. The increased diameter pipes allow exhaust to flow more freely through the entire system. This free flowing...
$770.00
