Sprockets

Precision Sprockets Built for Chain Alignment, Load Control, and Long-Term Durability

High-torque V-Twin builds depend on correctly matched motorcycle sprockets to transfer power without distortion or premature wear. TMF Cycles presents the Harddrive 49t Flat Sprocket which is made using CNC machining technology from carbon steel that has been specially developed for gears and shafts. After the machining process, the steel is subjected to hardening in order to make it endure impact and surface wear. The flat, no-offset design facilitates belt-to-chain conversion using 530 chains, and the included hub adapter ring allows mounting on both 1984–1999 and 2000–2022 hubs without the risk of losing engagement. Thus, it is a dependable choice for Harley rear sprockets when spacing is dialed in with compatible transmission components and motorcycle sprocket spacers. Black zinc passivation protects the surface under continuous load, reinforcing its role among true heavy-duty sprockets.

TMF’s in-house solutions focus on consistency and fitment across common platforms. TMF Signature Sprockets use ¼-inch thick steel and fit all 530 chain applications, making them a direct replacement within any Harley chain and sprocket set built around TMF kits. Available in multiple tooth counts, they suit both early and later wheel styles while maintaining standard Big Twin and Sportster bolt patterns using proper motorcycle sprocket bolts. The Bung King Sprocket applies the same steel thickness with a spoked design variation, offering the same flat profile and hub compatibility. Together, these options define modern Harley sprockets and V-Twin sprockets built from motorcycle steel sprockets, avoiding flex issues common with motorcycle aluminum sprockets or mismatched motorcycle pickup sprocket setups found in mixed drivetrains. Each pairing completes a balanced motorcycle sprocket kit or aftermarket motorcycle sprockets solution, front or rear, without compromise.