Compatible with:
Suitable for Yamaha Jog / Minarelli / Yamaha Clone
Suitable for Yamaha Jonway / Jmstar / Roketa / Sunl
Specifications
Type: Cylinder Big Bore Kit
Material: Metal
Displacement: 70cc
Master Cylinder Size: 110x95x80mm / 4.33"x3.74"x3.15"
Cylinder Head Size: 100x90x35mm / 3.94"x3.54"x1.38"
Piston Size: 48x47mm / 1.89"x1.85"
Wrist Pin Size: 38x10mm / 1.50"x0.39"
Package include:
1 Kit Cylinder Big Bore (as picture show)
Description:
70cc 2-stroke big bore kit for Chinese scooters.
This kit has a 47mm cylinder bore and 10mm wrist pin, includes wrist pin bearing.
47mm Big Bore Head Kit for 50cc 2-stroke 40QMB, E40QMB, 1E40QMB and 1PE40QMB Minarelli engines to increase drive power.
Feature:
The kit includes a piston, ring, pin, fixture, and top washer kit (as shown in the figure).
Cast pistons have additional strength with ultra-high silicon content.
The piston skirt is coated with molybdenum polytetrafluoroethylene to minimize resistance/wear and extend service life.
The piston dome has undergone anodizing treatment, providing excellent heat resistance and longer service life.
The gasket is made of high-performance materials to improve durability and provide higher reliability.
All components in the kit are bolted and can be easily installed.
🔧 Compatible Vehicles
| Make |
Model |
Years |
Engine |
| Yamaha |
Jog |
- |
50cc, 70cc |
