Here is a used set of 10 spline quick change gears. They are set # 02. 27/28 tooth. They are 4.27 ratio with a 4.11 ring and pinion and 5.04 ratio with a 4.86 ring and pinion. I used these in a vintage dirt race car and they worked good, no issues. Some minor pitting on a few teeth. Any questions please ask
