The Story
50cc QMB139 4-stroke 47mm, Performance Cylinder Kit. Upgrades to 72cc!
Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket.
*You may need to modify your engine case to accommodate the larger cylinder.
- Upgrades to 72cc
- Cylinder Bore: 47mm
- Cylinder Sleeve Outer Diameter: 52.7mm
- Wrist Pin Diameter: 13mm
- Total Piston Height: 34.4mm
- Compression Height (from center of wrist pin hole to top edge of piston): 17.25mm
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
50cc QMB139 4-stroke 47mm, Performance Cylinder Kit. Upgrades to 72cc!
Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket.
*You may need to modify your engine case to accommodate the larger cylinder.
- Upgrades to 72cc
- Cylinder Bore: 47mm
- Cylinder Sleeve Outer Diameter: 52.7mm
- Wrist Pin Diameter: 13mm
- Total Piston Height: 34.4mm
- Compression Height (from center of wrist pin hole to top edge of piston): 17.25mm
