47mm Big Bore Cylinder Rebuild Kit for 49cc 50cc GY6 139QMB Engines - Scooter Mo For Sale - New and Used

High-Performance GY6 Engine Upgrade Kit

Transform your ride with this comprehensive engine upgrade kit designed for GY6 4-stroke engines. Perfect for enhancing the performance of various scooters, ATVs, and go-karts.

Key Features:

• Cylinder Bore: 47mm / Non-EGR Cylinder
• Valve Length: 69mm
• Compatibility: Fits GY6 49cc, 50cc, 60cc, and 80cc engines
• Parts Included:
• GY6 80cc Cylinder Head with 69mm Valve
• 47mm Bore Cylinder Block
• Complete Set of Piston Assembly (Piston, Rings, and Wrist Pin)
• Full Set of Engine Gaskets
• 6-Pins CDI and Ignition Coil
• 4-Pin AC Regulator and Relay
• A7TC Spark Plug
• Set of Intake Manifold and Muffler Bolts
• Exhaust Locking Hardware
• 8.5 Gram Roller Weights
• 69mm Rocker Arms and Valve Seals
• Oil Pump Assembly with Driving Gear
• Camshaft and Camshaft Chain (82 links)
• Belt (699*18*30) and Chain Adjuster
• Oil Screen, Spring, Cover, and Oil Seal
• Starter Clutch

Compatibility:

This upgrade kit is compatible with a wide range of models including:

• Roketa
• Sunl
• Baja
• Taotao
• Panterra

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