Ring & Pinion 4.86 w/o Bearings

The Ring & Pinion 4.86 w/o Bearings from WINTERS is engineered for serious drag racers, circle track competitors, and street performance enthusiasts who demand aggressive final drive ratios. This 4.86 gear set is built to transform low-end torque delivery and launch characteristics, making it essential for vehicles optimized for quarter-mile acceleration or high-RPM track work where every fraction of a second counts. Whether you're building a dedicated race car or upgrading a street machine, this gear ratio delivers the mechanical advantage needed to convert engine power into forward motion with minimal drivetrain slack.

Manufactured by WINTERS, a trusted name in precision drivetrain components, this ring and pinion set is machined to exacting tolerances for smooth engagement and minimal backlash under extreme loading. The 4.86 ratio amplifies torque multiplication through the differential, allowing engines to reach peak power delivery at lower vehicle speeds—critical for launch control and acceleration in competitive environments. Supplied without bearings, this configuration allows builders to select OEM or premium bearing upgrades tailored to their specific application, weight transfer characteristics, and suspension geometry. The compact dimensions (11.35 x 7.3 x 13.1 inches) and 15.77 lb weight reflect precision manufacturing that minimizes rotational mass while maintaining structural integrity under sustained high-load operation.

This gear set serves racers upgrading factory differentials or rebuilding tired units in vehicles where factory ratios no longer meet performance demands. Installation requires careful attention to crush preload, shim stack, and backlash measurement—tasks best performed by builders experienced with differential assembly or professional race shops. The bearings-included configuration gives you flexibility to match bearing quality and preload characteristics to your vehicle's suspension, tire diameter, and intended use, whether that's dedicated road racing, drag strip competition, or aggressive street driving where aggressive acceleration is the priority.