Quarter Midget Axle Belt Drive Sprocket 39 Tooth

The Quarter Midget Axle Belt Drive Sprocket 39 Tooth from MPD Racing is a precision-engineered drivetrain component designed for quarter midget racing applications where reliable power transfer and consistent acceleration are non-negotiable. This aluminum sprocket serves as the critical interface between your belt drive system and rear axle, directly influencing how efficiently engine torque translates to wheel speed. Whether you're competing in sanctioned quarter midget events or optimizing your vehicle's drivetrain performance, this 39-tooth configuration delivers the gear ratio and durability required for serious competition.

Manufactured from aluminum and finished with black anodization, this sprocket combines lightweight construction with corrosion resistance and enhanced durability under high-speed operation. The 2.75-inch bolt pattern ensures compatibility with standard quarter midget axle assemblies, while the 39-tooth count is optimized for belt drive systems requiring balanced acceleration and top-end performance. Black anodizing not only provides protection against oxidation and wear but also improves heat dissipation—critical for maintaining sprocket integrity during extended racing sessions where drivetrain temperatures can spike significantly. The precision tooth profile ensures smooth engagement with your belt, reducing slippage and mechanical losses that would otherwise compromise lap times.

This sprocket is essential for quarter midget racers seeking to upgrade or replace worn drivetrain components. The 39-tooth specification suits drivers who prioritize balanced performance across mid-range and top-end RPM ranges, making it ideal for mixed-track conditions where versatility matters. Installation requires basic mechanical knowledge and alignment tools—ensure proper belt tension and axle centering during fitment to maximize sprocket life and prevent premature wear. The lightweight aluminum construction keeps unsprung weight low, supporting better suspension dynamics and overall handling on competition courses.