Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.53 3.75 4.86 5.34 4.42 Steel WIN8525

Quick change gear sets are essential for racers who demand flexibility across varying track conditions without the downtime of traditional rear-end swaps. The Winters 8500 Series Set 25 delivers six precision-engineered gear ratios in a single package, allowing you to optimize your final drive for everything from tight technical courses to high-speed ovals. With 10-spline compatibility and steel construction, this system provides the durability and ease of use that serious competitors rely on.

The dual-ratio design—featuring 4.12:4.53/3.75 and 4.86:5.34/4.42 combinations—means you can dial in the exact mechanical advantage your car needs for each session, then swap ratios in minutes rather than hours. This is precision engineering that directly impacts your lap times and eliminates the guesswork of single-ratio setups.

• 8500 Series construction
• 10-spline quick change
• Six gear ratios included
• 4.12, 4.53, 3.75, 4.86, 5.34, 4.42
• Premium steel material
• Bolt-on installation
• Race-proven durability
• Part number WIN8525