SKU: MPD69048
MPN: MPD69048
The MPD Racing Quarter Midget Axle Belt Drive Sprocket 48 Tooth (MPD69048) is a precision-engineered drivetrain component designed for competitive quarter midget racing applications. This 48-tooth sprocket manages engine power delivery to the axle through belt drive systems, directly controlling acceleration characteristics and top-end performance. Constructed from aluminum and finished in black anodized coating for corrosion resistance, this sprocket features a 2.75-inch bolt pattern for direct OEM compatibility with standard quarter midget frames.
The 48-tooth configuration strikes a balance between launch acceleration and mid-range power availability—a critical consideration in quarter midget competition where track conditions and engine output vary. The aluminum construction keeps rotating mass minimal, reducing rotational inertia and allowing engines to spool more responsively. Black anodized finishing provides hardened surface protection against UV degradation, moisture, and abrasive track dust, extending service life across multiple racing seasons. The 2.75-inch bolt pattern ensures direct fitment without adapter plates or aftermarket modifications.
This sprocket is engineered for racers, engine builders, and team mechanics who assemble or maintain competitive quarter midget powerplants. Quarter midget racing demands precise drivetrain tuning—sprocket tooth count directly determines final drive ratio and powerband characteristics. Competitors select tooth counts based on track layout, engine displacement, and tire compound. The 48-tooth option provides a mid-range starting point for tracks requiring balanced acceleration and top speed, making it an essential wear item and upgrade component for drivers optimizing drivetrain performance.
Quarter midget belt drive systems rely on sprocket durability under sustained centrifugal stress and belt tension cycles. MPD Racing's anodized aluminum construction withstands repeated thermal cycling and mechanical load without cracking or delaminating. This sprocket ships as a single unit and integrates into existing belt drive assemblies via the 2.75-inch pattern. Racers and builders typically stock multiple tooth counts to support different track conditions, engine configurations, and competition classes without requiring complete drivetrain redesigns.
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