GSC Power-Division 4G63T Single Beehive Spring set for Evo 8/9 # GSC5039

DescriptionGSC5039 Beehive Valve Spring Kit for EVO 8/9SetupCoil Bind (in)Install Height (in)Seat Pressure (lbs)Open Pressure, 11.0mm LiftMaximum Valve Lift (in)Beehive0.9201.539 / 1.51985 / 92223lbs @ 1.106″ 237lbs @ 1.117″0.539Max RPM: 8200Max boost: 25 psiThe GSC Power-Division Beehive Valve Spring Kit for the EVO 8/9 includes 16 beehive valve springs only. These are a replacement for the factory beehive springs and will work with the factory seat and retainer for an easy and inexpensive upgrade. Our beehive spring is made with an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilities. These springs have the highest level of spring load retention while still maintaining good fatigue throughout the life of the spring.***For EVO 8/9 ONLY******For EVO 1-7 and DSM, please see GSC5040 which includes springs and Ti retainers***