Complete Clutch Assembly 50cc 90cc 2-Stroke 1PE40QMB 1E50QMF Minarelli Jog Engines This is the three (3) shoe rear clutch commonly used on 50cc 2 Stroke engines It will also fit many 90cc 1E50QMF engines JOG90/JOG50 16 tooth/spline. Comes complete with drive pulley, sheave, springs, clutch, and clutch bell!