Magdyno /magneto /distributor timing chain, 110037 [nominal 3/8 inch x 5/32 inch actual 0.375 inch x 0.155 inch] , 44 pitch, Renold's Synergy endless, 3/8" (0.375") (9.525mm) pitch x 0.225" (5.72mm) width. The original magdyno chain fitted to Norton Model 1, 16H, 18, ES2, from 1948. Renold Synergy chain lasts up to 6 times the life of other brands see Renold synergy website Original part number 110037 now 06B1NA; Norton C2/113; 17699
