Complete 50mm  Big Bore Kit for the 50cc Maddog. This kit comes with the complete top end,variator rollers,gasket kit and oil pump. A must for 50cc Maddogs. We have sold and installed many of these kits,we consider this kit the best bang for your buck.  Free Shipping lower 48 states.

**This is our stage 1 kit**

Maddog QMB139 GY6 50cc 50mm Big Bore kit 69mm Valves *Stage 1 Kit*

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