NISSAN RB30E SOHC. High Performance dual valve spring set, for use with OEM retainers and spring base. 102lb seat pressure at 39.8mm installed height. 293lb at 13.7mm valve lift. Maximum lift 15.0mm.
RB30E SOHC | Dual Valve Springs
121lb seat pressure at 38.8mm installed height. 320lb at 13.70mm valve lift.
RB30 Dual Valve Springs. Premium Dual Valve Spring and Titanium Retainer kit to suit big power and big boosted applications. 121lb seat pressure at 38.8mm. 320lb at 13.70mm valve lift. Coil bind spring height 24.15mm. Retainer is 1.5mm shorter to give more retainer to seal clearance when using higher lift cams.