PEM Standard Quick Change Gears - Set #50 91907 Precision fit cap system is

Precision fit cap system is compatible with 1/2" or 5/8" shaft sizes

and a 7 quart system capacity

Standard impact: Helmet impact at 9

This one will allow you to "tailor" accelerator pump performance to the engine's actual requirements

PEM Standard Quick Change Gears - Set #50 91907 Precision fit cap system isProduct Description: Quick Change Gear Set Standard Set 50 10 Spline 4. 11 Ratio 7. 19 2. 35 4. 86 Ratio 8. 50 2. 77 Steel Sold Individually PEM Racing (Performance Engineering and Manufacturing) offers a wide selection of quick change gear sets, ring and pinion gears, differential cases, and other rear end components.