Gear Sets For Winters QRC (Quick Rear Change) Differential

The Winters™ Performance 8500 Series Quick-Change Gears are engineered for serious racers demanding flexibility, speed, and reliability in driveline tuning. Designed to work with 10-inch (25,4 cm) diameter ring gears, these 10-spline gears are machined, broached, and hobbed from premium SAE 8620 steel – ensuring long-lasting durability under high-performance conditions.

Each gear measures 1 ⅜ inches (approx. 3,49 cm) in width, offering a perfect balance of strength and weight. The series supports rapid final drive changes by simply swapping gear sets – allowing racers to adjust performance for different tracks or driving styles without opening the entire differential.

With over 50 gear ratio sets available, including special low-horsepower options (sets 50–58), racers can dial in their setup with unmatched precision. Whether aiming for higher RPMs or better torque at the wheels, the 8500 Series offers a competitive edge where every fraction of a second counts.

Key Features:

• Compatible with 10" (25,4 cm) diameter ring gears.
• Built from high-strength SAE 8620 steel.
• 10-spline design for seamless fit and durability.
• Gear width of 1 ⅜ inches (approx. 3,49 cm) for strength without excess bulk.
• Supports rapid gear swaps for fast final drive tuning.
• Wide range of gear ratios, including low-horsepower applications (sets 50–58).
• Perfect for dirt track, asphalt racing, and performance builds needing adjustable gearing.