Minarelli 2-stroke 50cc cylinder rebuild kit showing cast iron cylinder, aluminum head, piston, rings, wrist pin, and gaskets Minarelli 2-stroke 50cc cylinder rebuild kit showing cast iron cylinder, aluminum head, piston, rings, wrist pin, and gaskets
Minarelli 50cc 40mm cylinder assembly close-up showing cast iron bore and exhaust port Jog 50cc Minarelli 50cc 40mm cylinder assembly close-up showing cast iron bore and exhaust port Jog 50cc
Jog 50cc Cylinder Assembly (40mm) Jog 50cc Cylinder Assembly (40mm)
Minarelli 2-stroke 50cc cylinder rebuild kit showing cast iron cylinder, aluminum head, piston, rings, wrist pin, and gaskets
Minarelli 50cc 40mm cylinder assembly close-up showing cast iron bore and exhaust port Jog 50cc
Jog 50cc Cylinder Assembly (40mm)

Scooterworks

Minarelli 2-Stroke 50cc Engine Rebuild Kit- 40mm

SKU 1100-1453
$78.00
Shipping calculated at checkout.
Description

Restore compression and smooth power delivery on your Minarelli-style 2-stroke scooter with this complete 50cc cylinder assembly. Engineered for the Minarelli 1PE40QMB / 1E40QMB horizontal and vertical engine platform, this kit provides a direct OEM-equivalent replacement without machining or modifications. Includes everything needed for a full top-end rebuild.

  • 40mm precision cast iron cylinder for superior thermal stability and wear resistance
  • Aluminum alloy piston with two compression rings
  • 10mm wrist pin with needle bearing and circlips
  • Cylinder head gasket and base gasket included
  • Direct bolt-on fit — matches original factory porting
  • Verify your wrist pin is 10mm before ordering (some European models use 12mm)

Specifications

  • Bore: 40mm (stock 50cc)
  • Wrist pin diameter: 10mm
  • Displacement: 49.8cc
  • Cooling type: Air cooled
  • Engine type: Minarelli 1PE40QMB / 1E40QMB 2-stroke
  • Weight: 4.5 lbs
  • SKU: 1100-1453
  • MPN: 2560

Torque Specs

Tighten cylinder head nuts in an X pattern to 1.0–1.4 kg-m (7.2–10 ft-lb) while engine is cold.

Compatibility

Brand Compatible Models
Genuine Buddy 50, RoughHouse 50, Black Cat 50, Rattler 50
Yamaha Zuma 50 (YW50) 2002–2011, Jog 50, Vino 50
Adly Fox, Jet, Noble, Thunderbike
Eton Beamer, Beamer II, Beamer III, Matrix
Daelim Cordi, Message
Chinese Jog clones Most 50cc 2-stroke Jog-style scooters and ATVs

 

Installation note: Apply a light coat of 2-stroke oil to cylinder walls and piston rings before assembly to prevent a dry start. Always use new base and head gaskets on every install.

This product is intended as an OEM equivalent for listed models. Any misuse, alteration, or alternative application may be prohibited by law.

California Prop 65 Warning: www.p65warnings.ca.gov
Product Diagrams
Features
  • OEM-Spec Performance: 40mm bore size designed to restore original factory power and compression.
  • Complete Top-End Kit: Includes high-quality piston, rings, 10mm wrist pin, and circlips for a hassle-free rebuild.
  • Plug-and-Play Fitment: Direct bolt-on replacement for Minarelli-style horizontal 2-stroke engines.
  • Engineered for Durability: Cast iron cylinder construction designed for long-lasting heat dissipation and reliability.
Specifications

Bore: 40mm | Wrist pin: 10mm | Displacement: 49.8cc | Cooling: Air cooled | Engine: Minarelli 1PE40QMB / 1E40QMB 2-stroke | Weight: 4.5 lbs | SKU: 1100-1453 | MPN: 2560
Manuals / Install Instructions

Torque Specs: Tighten cylinder head nuts in an 'X' pattern to 1.0–1.4 kg-m (7.2–10 ft-lb) while engine is cold.
Model Fitments

Genuine Buddy 50, RoughHouse 50, Black Cat 50, Rattler 50; Yamaha Zuma 50 (YW50) 2002-2011, Jog 50, Vino 50; Adly Fox, Jet, Noble, Thunderbike; Eton Beamer, Beamer II, Beamer III, Matrix; Daelim Cordi, Message; Chinese Jog-style 50cc 2-stroke clones
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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