Valve Springs

GSC P-D Audi R8 V10 / Lamborghini Huracan V10 5.2L Valve Spring & Ti Retainer Kit (w/Seats & Seals)

GSC P-D 2022+ Subaru WRX FA24F High Pressure Conical Valve Spring and Ti Retainer Kit

GSC P-D Ford Raptor/Platinum/Limited Ecoboost 3.5L H.O. Conical Valve Spring and Ti Retainer Kit

GSC P-D Subaru FA20 WRX/BRZ/FRS Dual Cylindrical Valve Spring Kit

GSC P-D Toyota 2JZ Conical Valve Spring and Ti Retainer Kit

GSC P-D Mitsubishi 4G63T Extreme Pressure Conical Valve Spring and Ti Retainer Kit

LT1/L86 Conical Spring Kit .650in Lift

Brian Crower Dodge SRT-4/PT Cruiser (Triple Groove Keeper/Valve) Single Spring & Titanium Retainer K

LS6 Beehive Valve Spring .560in Lift

LS7 Dual Spring Kit - .685in Lift - SK702

GSC P-D Mitsubishi 4G63T High Pressure Conical Valve Spring and Ti Retainer Kit

1.437 Spring Cups

GSC P-D 2017+ Audi RS3 DAZA Beehive Valve Spring and Ti Retainer Kit (60PSI Max Boost)

Manley Subaru WRX/STi .490in Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)

Manley 90-06 Mitsubishi 4G63-4G63T DSM / EVO DOHC 16 Valve Spring and Retainer Kit (w/o Valve Locks)

GSC P-D Nissan RB26DETT Shimless Conical Valve Spring & Ti Retainer Kit ( Max Boost PSI 50)

GSC P-D VQ35DE (Turbo High Rev) Beehive Valve Spring and Titanium Retainer Kit

GSC P-D Toyota 2JZ-GTE Extreme Pressure Single Conical Valve Spring and Ti Retainer Kit

Brian Crower Subaru EJ Series / Toyota 3SGTE/GE Single Spring & Steel Retainer Kit

GSC P-D Toyota 2JZ Beehive Valve Springs & Ti Retainer Kit (Check Fitment of Spring Base)

Ferrea Honda/Acura K20/K24Z3/K24Z7 Dual Valve Spring Kit