MC^MP 2-coil Full-wave Magneto Stator for 50cc-125cc Electrical Start ATV Dirt Bike Go Kart Pit Bike 4 Wheeler Quad Bikes 2-Coil Full-Wave. 6-wire. fits for 50cc-125cc Electrical Start Horizontal Engine. fits for 50cc-125cc Electrical Start ATV, Dirt Bike, Go Kart The bolt hole spacing:70mm, Inner Diameter: 33mm