Description Reviews Supertech Kit. Make sure you pair it with all of the other Supertech items like the valve seals and valve guides! Beehive Valve Spring Kit Type: Beehive Spring Press.Seat: 65 @33.60mm Max Lift: 11.40mm Coil Bind: 22.20mm Rate: 9.80 lbs/mm Retainer: RET-MC56/T1 Spring : SPR-MC56BE