Here is a used set of Pem 10 spline quick change gears. They are set 22. They are 5.41 with a 4.11 ratio ring and pinion and 6.39 ratio with a 4.86 ring and pinion.
PEM Racing 61022 Quick Change Gear Kit
PEM Racing Standard Quick Change Gear Set 10 Spline 5.04 / 3.35 Ratio
PEM Racing Standard Quick Change Gear Set 10 Spline 5.86 / 2.90 Ratio
PEM Racing Premium Quick Change Gear Set 10 Spline 5.25 / 3.22 Ratio
PEM Racing Standard Quick Change Gear Set 10 Spline 4.33 / 3.90 Ratio
PEM Racing Premium Quick Change Gear Set 10 Spline 5.19 / 3.25 Ratio
