Reproduction style brake drum. With pre-installed sprocket. Replacement for 41400-37 (4028-37A). Also replacement for 41401-37 (drum without a sprocket).

Note: Even marginal out of round sprockets or brake drums, a common occurrence from day one, create a noticeable tight spot. Adjust your chain on this 'tightest spot'. Always keep sufficient play to prevent excessive wear on chain and bearings of transmission mainshaft, swingarm and wheel.