NCY 72cc big bore piston-cylinder kit PRCK1 for Minarelli 50cc 2-stroke engines. Fits Genuine Buddy 50, Yamaha Zuma/Jog, RoughHouse 50 & more. 47mm, 10mm pin. NCY 72cc big bore piston-cylinder kit PRCK1 for Minarelli 50cc 2-stroke engines. Fits Genuine Buddy 50, Yamaha Zuma/Jog, RoughHouse 50 & more. 47mm, 10mm pin.
NCY 72cc big bore piston-cylinder kit PRCK1 for Minarelli 50cc 2-stroke engines. Fits Genuine Buddy 50, Yamaha Zuma/Jog, RoughHouse 50 & more. 47mm, 10mm pin.

NCY

NCY 72cc Big Bore Kit 47mm - Buddy / Roughhouse / Zuma 50cc

SKU PRCK1
$185.00
Shipping calculated at checkout.
Description

Unlock more power from your 50cc 2-stroke scooter with the NCY 72cc Big Bore Kit (SKU PRCK1). Full kit laid out: gray iron-bore cylinder with 4-fin cooling fins and 4-bolt head pattern, silver finned aluminum performance cylinder head, 47mm flat-top forged piston with wrist pin, 2 piston rings, 2 G-clips/circlips, green composite base gasket, and copper head gasket. Direct bolt-on upgrade for Minarelli horizontal 50cc 2-stroke engines — noticeable bump in displacement, throttle response, and top-end pull without major modifications. Requires carburetor re-jetting after installation (larger main jet recommended).

Kit Contents

  • Iron-bore cylinder — gray, 4-fin cooling fins, 4-bolt head pattern
  • Finned aluminum performance cylinder head
  • 47mm flat-top forged aluminum piston
  • 2 piston rings
  • 10mm wrist pin
  • 2 G-clips / circlips
  • Green composite base gasket
  • Copper head gasket

Specifications

  • SKU: PRCK1
  • Brand: NCY (Taiwan)
  • Displacement: 72cc
  • Bore: 47mm
  • Wrist Pin: 10mm
  • Piston Rings: 2 included
  • Engine Type: 2-stroke Minarelli horizontal
  • Weight: 8.0 lbs
  • Dimensions (packaged): 6" L x 6" W x 5" H

Model Compatibility

Brand Model
Genuine Scooter Co. Buddy 50, RoughHouse 50, Rattler 50, Black Cat 50
Yamaha Jog 50, Zuma 50 (2T), Vino 50 (2T)
Adly & Chinese 2T Minarelli 50cc horizontal 2-stroke platforms

 

Performance upgrade — intended for off-road use only. Not legal for use in California on pollution-controlled vehicles. Check all local laws before installing. Not covered by warranty.

 
Product Diagrams
Features
  • 72cc displacement upgrade from stock 50cc
  • 47mm forged aluminum piston with 2 piston rings
  • 10mm wrist pin with G-clips included
  • Full top-end overhaul kit — everything needed for installation
  • Direct bolt-on for Minarelli 50cc horizontal 2-stroke engines
  • Requires carburetor re-jetting after installation (larger main jet recommended)
Specifications

Displacement: 72cc | Bore: 47mm | Wrist Pin: 10mm | Piston Rings: 2 included | Engine Type: 2-stroke Minarelli horizontal | Weight: 8.0 lbs
Model Fitments

Genuine Buddy 50 | Genuine RoughHouse 50 | Genuine Rattler 50 | Genuine Black Cat 50 | Yamaha Jog 50 (2T) | Yamaha Zuma 50 (2T) | Yamaha Vino 50 (2T) | Adly and Chinese Minarelli 50cc horizontal 2-stroke platforms | Requires carb re-jet after installation | Off-road use only
  • 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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