Description
If you’re serious about track performance, you need a quick change gear set that lets you dial in the perfect ratio for every session without breaking down mid-season. The Winters 8500 Series delivers multiple proven ratio combinations in one steel construction, giving you the flexibility to optimize acceleration and top-end speed based on track layout and conditions. This is the kind of reliability and versatility that separates competitive racers from the rest.
Technical Specifications:
- Series: 8500
- Spline Count: 10
- Material: Steel
- Quick Change Compatible
- 4.12 Primary: 6.29 / 2.70
- 4.86 Primary: 7.41 / 3.18
- Bolt-on Installation
- MPN: 8521A
- Sold Individually






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