2004-2007 Subaru STi - Engine

GrimmSpeed Pitch Stop Mount Race Version (95A Bushings, Red), 2002-2026 WRX & 2004-2021 STi

GrimmSpeed Pitch Stop Mount (80A Bushings, Black), 2002-2026 WRX & 2004-2021 STi

GrimmSpeed 'Cool Touch' v2 Delrin Oil Cap (Black), 2002-2021 WRX & 2004-2021 STi & BRZ/FR-S/86

GSC S3 Billet Camshafts (282/282), 2004-2007 STi & 2006-2014 WRX

GSC S2 Billet Camshafts (272/272), 2004-2007 STi & 2006-2014 WRX

GSC Valve Seat Set OEM Replacement, 2002-2014 WRX & 2004-2021 STi

GSC S1 Billet Camshafts (268/266), 2004-2007 STi & 2006-2014 WRX

GSC Single Valve Spring Set w/ Ti Retainers (Set/16), 2002-2014 WRX & 2004-2021 STi

GSC Single Beehive Valve Springs w/ Ti Retainers (Set/16), 2002-2014 WRX & 2004-2021 STi

GSC Intake Valve Guides (Manganese Bronze, Traditional, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Exhaust Valve Guides (Manganese Bronze, Traditional, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Intake Valve Guides (Manganese Bronze, w/ Depth Stopper, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Exhaust Valve Guides (Manganese Bronze, w/ Depth Stopper, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Super Alloy Exhaust Valves (+1mm/33mm, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Super Alloy Exhaust Valves (Std/32mm, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Intake Valves (21-4N Stainless, 37mm, +1mm, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Exhaust Valves (23-8N Chrome Polished, 33mm, +1mm, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Intake Valves (21-4N Stainless, 36mm, Std Size, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Exhaust Valves (23-8N Chrome Polished, 32mm, Std Size, Set/8), 2002-2014 WRX & 2004-2021 STi

GSC Viton Valve Stem Seals (6mm, Set/16), 2002-2014 WRX & 2004-2021 STi

GrimmSpeed Top Mount Intercooler Y-Pipe Gaskets (Pair/2), 2002-2007 WRX & 2004-2021 STi

GrimmSpeed Throttle Body Gasket, 2004-2021 STi & 2006-2014 WRX

GrimmSpeed TGV => Head Gasket (Pair/2), 2002-2014 WRX & 2004-2021 STi