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This 78 tooth clutch drum starter ring gear is a weld-on replacement designed for stock clutch drums on Harley-Davidson Sportster models. Built for proper starter engagement, this ring gear is ideal for replacing worn or damaged original units during clutch or primary service.
The beveled edge is designed for welding on the outside (teeth side) to ensure correct installation and secure fitment. Whether you’re servicing a daily rider or rebuilding a vintage Sportster, replacing a worn ring gear helps maintain dependable starting performance.
Harley-Davidson Sportster models 1984–1990
Designed for stock clutch drums
78 Tooth
Weld-on style