Across center fixing hole size (center to center):27mm
12mm across flat one way bearing, 6mm shaft diameter
Please gently pull the start string and add some extra wax for lasting performance;Please notice that the pull start is not suit for all 16-21 nitro engines, pay attention to the actual size of your cars
Buy with confidence: Free replacement without return for cord broken within 30 days. If you are facing any problem, please feel free to contact us