Minarelli 47mm Big Bore Cylinder Kit
ITEM# TT-15648
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Description
47mm Big Bore Cylinder Kit for Minarelli and Yamaha Scooters
This 47mm big bore kit raises the displacement of a Minarelli-powered 50cc scooter to 68cc, which can noticeably improve how the engine performs. It is built for the horizontal 1PE40QMB engine used in Jog-style scooters, so it suits riders who want a stronger upgrade. You can find it alongside other Minarelli 50cc and Yamaha Jog scooter parts for engine work. Everything needed for a simple swap is included.
Everything Included for Installation
The kit ships with every component required for the upgrade: cylinder, piston, a 12mm pin, retaining clips, piston rings, a head gasket, and a base gasket. Because the set is complete, you should not have to track down additional pieces, which keeps the replacement straightforward. Keep in mind that the larger cylinder diameter may require some modification to the engine case before it fits properly.
Specifications and Performance Gain
The 47mm bore brings the displacement to roughly 68cc, giving your scooter more potential output. The kit is made specifically for the horizontal layout of the Jog/Minarelli engine, so it lines up directly with that platform. Before you install it, confirm that the small end of your crank will take the 12mm piston pin.
Specifications
- Bore: 47mm
- Piston Pin: 12mm
- Overall Height: 87mm
- Cylinder Sleeve Outer Diameter: 50.9mm
- Orientation: Horizontal
- Upgraded Displacement: ~68cc (based on stock 39.2mm stroke)
- Fits: Minarelli 1PE40QMB horizontal 2-stroke 50cc engine (Jog-style), with 12mm piston pin
Fitment
Fits:
- Minarelli 1PE40QMB horizontal 2-stroke 50cc engine (Jog-style, 12mm piston pin)
- Yamaha Jog 50 (2-stroke)
- Yamaha Zuma 50 (2-stroke)
- Yamaha Vino 50 (2-stroke)
- Other horizontal Minarelli-based 50cc 2-stroke scooters with 12mm piston pins
How to choose: This kit is only suitable for a horizontal 2-stroke engine that uses a 12mm piston pin and a stock stroke of 39.2mm.
Shop more: Minarelli 50cc / Yamaha Jog Parts · Scooter Big Bore & Cylinder Kits · Scooter Parts
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