Brake Drum Rear Wheel 26TPI 60 mm long usable f. 16H, Mod.18, Mod. 19, Mod. 50, ES2, Big 4, Atlas and early Commando (not late Commando) all Norton Pre Commando and Early Nortons
Cooling Ring for Exhaust Pipe 500cc Triumph 1 5/8" T100 incl. August 1971Push in cylinder head are smaller size 1 3/4"Please note, some later cylinder heads have been converted to push over, which suits this clamp.Bolt - 70-0409 Washer - 70-8860