Shibata GRK Spring Holder -1.5mm (R31S142BK), sold as a pair. Aluminum down-retainer that lowers spring height by 1.5mm versus the standard GRK spring holder.
Fits: the damper ball end set (R31G028) used on the GRK5-R HRP kit (GRK5RYH). Does not fit the damper lower joint set (R31G069) used on GS2NOB / GS2MOD.
