Final Drive

Final Drive Components That Control Power Transfer and Long-Term Reliability

The Harley final drive determines how engine power actually reaches the ground, making component choice critical for torque-heavy builds. Riders balancing acceleration, cruising speed, and durability rely on precise combinations of motorcycle sprockets, chains, or belts depending on riding style. Chain-driven setups remain popular where adjustability and strength matter most. The TMF Cycles’ offerings like DID 530 ZVMX2 Chains are engineered for heavyweight motorcycles producing serious torque and horsepower. With MotoGP-derived Direct Energy Transfer technology, these Harley drive chains reduce stretch under load while the X-Ring sealing design minimizes power loss through four contact points. An average tensile strength of 10,408 pounds and rivet-style master link make this chain a dependable choice among modern motorcycle final drive parts, especially where shock loads are common.

Sprocket selection fine-tunes speed characteristics and complements chain systems. Harddrive Highway Sprockets are designed for riders prioritizing highway performance and top-end efficiency. As quality OE replacements, these front and rear sprockets come pre-drilled for hub mounting and are available in multiple sizes with black or chrome finishes. When paired correctly, they form effective chain drive kits that enhance cruising without excessive engine strain. For FXR platforms, the TMF Early OG Chain Kit delivers a period-correct solution while improving reliability. This complete package includes a 24-tooth PBI front sprocket, 51-tooth dished rear sprocket, 120 BMXR chain, ARP hardware, upgraded seals, and an indexing main shaft nut. It represents a full V-Twin chain conversion kit approach rather than pieced-together Harley drivetrain parts, integrating critical V-Twin final drive components such as spacers and sealing elements to manage alignment and load distribution.