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The dramatic firewall flex is the source of this performance flaw in Subarus that we came to solve
if it's in the middle of summer and you're at the drag strip
dropped it in the anodizing tank for a custom matte finish
WRX and Forester XT models will need OEM STI or GrimmSpeed Y-Pipe Kit
2008+ OEM Subaru Stretch Belt Install Kit Option (No other company offers this Optional Add-On)
GrimmSpeed Shift Knob (Stainless Steel) - Subaru 5 Speed & 6 Speed Models Subaru-WRX-STI-2007 The dramatic firewall flex isEach knob is machined from solid 304 stainless steel rod or delrin in Minnesota and weighs in at 675g. Each shift knob also receives laser etched GrimmSpeed logos around the base. The shift knob itself features a hybrid design that is comfortable in both overhand, and side grip driving styles. These shift knobs are designed to fit the 6spd right out of the box, so if you'd like to hold the shift boot up on your 5spd shifter, you'll want to add our
