Here is a used set of CHEETAH 10 spline quick change gears. They are set 6. 23/25 tooth. They are 4.47 with a 4.11 ratio ring and pinion and 5.28 ratio with a 4.86 ring and pinion. These are the wider 1 3/4" gears. We have more gears on other listings. We do combine shipping on multiple items.