SKU: MPD69042
MPN: MPD69042
The Quarter Midget Axle Belt Drive Sprocket 42 Tooth by MPD Racing is a precision-engineered drivetrain component purpose-built for quarter midget racing applications where power transfer efficiency directly impacts competitive performance. This sprocket serves as the critical interface between the belt drive system and the axle assembly, translating engine torque to wheel rotation with minimal energy loss. Quarter midget racers and technical teams rely on properly specified sprocket tooth counts to achieve optimal gearing ratios for track conditions, acceleration curves, and top-end velocity targets.
The 42-tooth configuration is a mid-range sprocket size that balances acceleration response with sustained speed capability, making it versatile across multiple track layouts and racing classes. MPD Racing manufactures this sprocket to tight tolerances, ensuring consistent bore fit, reliable belt engagement, and repeatable power delivery lap after lap. The compact footprint—measuring 4 inches in diameter with a 2.5-inch bore width and 4.5-inch overall depth—integrates seamlessly into standard quarter midget rear-axle assemblies without modification. At 0.43 pounds, the sprocket maintains the lightweight construction critical to junior racing platforms, reducing unsprung mass and improving handling response.
Quarter midget teams and racing parents preparing vehicles for regional and national competition benefit from stocking multiple sprocket sizes to adapt quickly to different track configurations and engine setups. The 42-tooth design works in conjunction with complementary drive pulleys to fine-tune final drive ratios; teams frequently run larger tooth counts for high-banked or longer circuits and smaller counts for tight, technical tracks. Installation requires basic mechanical knowledge and standard bearing-press equipment. Compatibility with your specific quarter midget model should be verified against your vehicle's belt-drive system specifications and existing pulley sizing before ordering.
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