SKU: WIN5067G-38.5
MPN: 5067G-38.500
The Winters 38.5 Axle/31 Spline Gundrilled (MPN 5067G-38.500) is a precision-engineered axle shaft built for high-performance differential applications demanding reliability and strength. This gun-drilled axle shaft spans 38.5 inches in length and features a 31-spline carrier design paired with a 24-spline drive flange, making it compatible with specific Winters differential housings and gear ratios. Gun-drilling—a manufacturing process that removes material from the axle's interior through precision drilling—reduces rotational mass while maintaining structural integrity, directly improving acceleration response and reducing drivetrain inertia in performance vehicles.
Constructed from hardened steel in its natural finish, this axle shaft is designed to withstand the stresses of competitive racing, off-road recovery scenarios, and high-torque applications where OEM axles fall short. The 31-spline carrier interface provides secure engagement with Winters differential internals, while the 24-spline flange connects to the wheel hub assembly. At 8.65 pounds, the gun-drilled design contributes to lighter overall drivetrain weight without sacrificing the fatigue resistance required for sustained high-performance duty. The 1.5-inch diameter profile is consistent with racing-grade axle standards, and the natural steel finish allows for custom coating or protective treatment based on your specific operating environment—whether that's asphalt racing, salt-air coastal driving, or mud terrain.
This axle shaft is engineered for buyers building or upgrading independent rear suspension systems, race-spec differentials, or extreme-duty four-wheel-drive platforms. It serves drag racers, road-course competitors, and off-road enthusiasts who require the dimensional precision and material quality Winters is known for in the high-performance motorsports community. If your vehicle uses a Winters differential housing and you're replacing worn or damaged axle shafts, or upgrading to lighter gun-drilled designs for track or competition use, this is the correct OEM-equivalent component for your build.
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