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). Direct bolt-on upgrade for Minarelli horizontal 50cc 2-stroke engines — a 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

  • Displacement: 72cc
  • Bore: 47mm
  • Wrist pin: 10mm
  • Piston rings: 2 included
  • Engine type: 2-stroke Minarelli horizontal
  • Weight: 8.0 lbs
  • SKU: PRCK1
  • Brand: NCY (Taiwan)

Compatibility

Make Model
Genuine 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

 

This product is intended for off-road use only. This product is not intended for use on public roads or land.
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

MakeModel
GenuineBuddy 50, RoughHouse 50, Rattler 50, Black Cat 50
YamahaJog 50, Zuma 50 (2T), Vino 50 (2T)
Adly & Chinese 2TMinarelli 50cc horizontal 2-stroke platforms
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