Pinion Esjot steel 12 teeth 20x18.3mm for Hercules K 50, 50 RL, SE, RE, SL, Sprint, SX, RX, Ultra, Ultra LC, 2, 2 80 AC, RS, AC Chopper, RX 9, XE Sport Bike SB 1, 5, KTM Comet, RSL, RSW, DKW RT 159 Mokick, KKR with Sachs S, 50/SA engine