Bump your Minarelli-powered 50cc scooter up to 68cc with the Universal Parts 47mm Big Bore Cylinder Kit. Designed for the horizontal 1PE40QMB Jog-style engine, this complete kit includes everything needed for the swap — cylinder, piston, pin, rings, circlips, head gasket, and base gasket.
Features
- Upgrades displacement from 50cc to 68cc (based on stock 39.2mm stroke)
- Complete kit — cylinder, piston, 12mm pin, circlips, rings, head gasket, and base gasket included
- Horizontal engine orientation (Jog/Minarelli style)
- Direct fitment for 1PE40QMB engine platform
Specifications
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Bore: 47mm
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Piston Pin: 12mm
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Overall Height: 87mm
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Cylinder Sleeve Outer Diameter: 50.9mm
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Orientation: Horizontal
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Upgraded Displacement: ~68cc (stock 39.2mm stroke)
Model Fitment
- Minarelli 1PE40QMB horizontal 2-stroke 50cc engine (Jog-style)
- Yamaha Jog 50, Yamaha Zuma 50 (2-stroke), Yamaha Vino 50 (2-stroke)
- Other horizontal Minarelli-based 50cc 2-stroke scooters with 12mm piston pins
Installation Note: Engine case modification may be required to accommodate the larger cylinder diameter. Verify clearances before installation. Verify small end of the crank accepts 12mm piston pin
About Universal Parts
Universal Parts is a trusted supplier of aftermarket scooter performance and replacement components, offering reliable, well-priced solutions for a wide range of engine platforms and makes.
This product is intended for off-road use only. Not intended for use on public roads. Not legal for use in California.
California Prop 65 Warning: www.p65warnings.ca.gov
