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

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

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.