Description
For Early 4V- 851, 888, 748, 916, 996, 998, 749, 999, ST4, ST4S, Monster S4, S4R, S4RS
Compatible with all 7 mm Closer Shims (OEM and EMS closers).
Requires the use of modified opener shims when used on 4V bikes.
NOTE1: MBP collets will NOT work with some 851 superbikes (ones with stainless steel half-rings) unless the valves have been updated
