Cylinder Heads & Valvetrain Components

GSC P-D High Pressure Single Conical Valve Spring & Ti Retainer Kit | 1992-2006 Mitsubishi Evo 1/2/3/4/5/6/7/8/9 and 1990-1999 Mitsubishi Eclipse/Eagle Talon/Plymouth Laser (5098)

GSC P-D .003+ Intake Valve Guide Stopper Style Single | 2008-2015 Mitsubishi Evo X (3014.003-1)

GSC P-D .001+ Exhaust Valve Guide Stopper Style Single | 2008-2015 Mitsubishi Evo X (SC3013.001-1)

GSC P-D .003+ Exhaust Valve Guide Stopper Style Single | 2008-2015 Mitsubishi Evo X (3013.003-1)

GSC P-D Intake Valve Guide Kit | 2017-2021 Honda Civic Type-R (3120-8)

GSC P-D Manganese Bronze Intake Valve Guide | 2000-2009 Honda S2000 (3088-8)

GSC P-D Manganese Bronze Exhaust Valve Guide | 2015+ Dodge Viper (3069-10)

GSC P-D Manganese Bronze Intake Valve Guide | 2015+ Dodge Viper (3068-10)

GSC P-D Manganese Bronze Intake/Exhaust Valve Guide | Multiple Subaru Fitments (3067-8)

GSC P-D Manganese Bronze Intake Valve Guide Kit | 2003-2005 Dodge Neon SRT-4 (3062-8)

GSC P-D Manganese Bronze Intake/Exhaust Valve Guide Kit | 1987-1992 Toyota Supra (3020-8)

GSC P-D Chrome Polish Intake Valve 36mm Head +1mm | 2014-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2134-01)

GSC P-D 23-8N Chrome Polish Exhaust Valve 30mm Head +1mm | 2014-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2133-01)

GSC P-D 21-4N Chrome Polished Intake Valve 35mm STD | 2014-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2132-01)

GSC P-D 23-8N Chrome Polished Exhaust Valve 29mm STD | 2014-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2131-01)

GSC P-D 21-4N Chrome Polished Intake Valve - 36mm Head +1mm - Single | 2013-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2124-01)

GSC P-D Chrome Polished Exhaust Valve - 30mm Head +1mm - Single | 2013-2021 Subaru BRZ/Scion FR-S/Toyota 86 (2123-01)

GSC P-D Chrome Polished Exhaust Valve - 30mm Head +1mm - Single | 1987-1992 Toyota Supra (2073-01)

GSC P-D Chrome Polished Exhaust Valve - 29mm Head STD - Single | 1987-1992 Toyota Supra (2071-01)

GSC P-D Chrome Polished Intake Valve - 37.15mm Head STD Kit | 2009-2021 Nissan GTR (2056-12)

GSC P-D Chrome Polished Intake Valve - 37.15mm Head STD - SINGLE | 2009-2021 Nissan GTR (2056-01)

GSC P-D Chrome Polished Super Alloy Exhaust Valve - 32.15mm Head STD Kit | 2009-2021 Nissan GTR (2055-12)

GSC P-D Chrome Polished Super Alloy Exhaust Valve - 32.15mm Head STD - SINGLE | 2009-2021 Nissan GTR (2055-01)