At Whites, we have a comprehensive range of parts and accessories designed and manufactured specifically for classic British motorcycles. These parts and accessories are perfect for your BSA, Norton or Triumph restoration or custom project. So dust off that Union Jack, pin it up on the workshop wall and get into it!Designed to meet or exceed OEM specifications our Triumph replacement rear brake drum is perfect bringing the braking back to life on your classic restoration or custom project. The brake drum is compatible with the Triumph 500's from 1966-1974, 650's from 1966-1970 and also fits the Triumph T150 Trident and BSA Rocket III. Designed to replace OEM parts 37-1498 and 37-3585.Meet or exceed OEM specificationsCompatible with many Triumph rear brakes 66-74Also compatible with the BSA Rocket IIIAccepts bolt-on ring sprocketsIncludes new bolts and washersDrum diameter: 179mmReplace OEM parts: 37-1406 and 37-1407Note: This brake drum can only be used to replace OEM part 37-1498 if UNF bolts are used in place of the original CEI bolts.