More Grimmspeed parts:All Grimmspeed parts WRX 2022+ WRX 2015-2021 WRX 2008-2014 WRX 2002-2007 STI 2015-2021 STI 2008-2014 STI 2004-2007 BRZ 2022+ BRZ 2013-2020 GR86 2022+ Gaskets and Hardware Engine Covers and Caps Engine Dress Up Intercoolers Top Mount Interior Shift Knobs Intercoolers Front Mount Engine Power Packages Cooling Radiator Shrouds Intake Cold Air Strut Bars Turbo Inlets / Air Inlets Electronics Boost Control Solenoids Exhaust Downpipes and Y-Pipes Turbo Blow Off Valves Engine Head Gaskets Exterior License Plate Holder Cooling Radiator Hoses Intercooler Piping Engine Batteries and Tie downs
Shop Grimmspeed Exhaust Cat Back. This collection brings together every Grimmspeed product we catalogue under Exhaust Cat Back, in one place. Parts here can span many different vehicles, so use the fitment tags and notes on each product page to match the part to your car before ordering.
Every Grimmspeed product in our catalogue tagged Exhaust Cat Back. Because the range covers many vehicles and years, each product's own fitment tags and notes are the source of truth for whether it suits your car.
An axle-back replaces only the rear muffler section and mostly changes the sound. A cat-back replaces the exhaust from the catalytic converter back, changing sound and usually freeing up flow as well. Most bolt-on systems install without cutting.
The full Grimmspeed collection is linked at the top of this page, and Grimmspeed also breaks the range down by vehicle - WRX 2022+, WRX 2015-2021, WRX 2008-2014, WRX 2002-2007, STI 2015-2021, STI 2008-2014 and more are all linked above.