Cylinders/Gaskets AR-50 Scootterre (42)

High performance cam for 139QMB engine. Use this camshaft when upgrading the cylinder and head to get the most performance from your new 72 or 82cc kit. 25.8mm intake lobe...

PERFORMANCE CAMSHAFT FW 80CC RJ3-2-2.  14100-GY39-0000  **PARTS FOR GY650 SCOOTER CYLINDER HEAD**

Valve lever for GY6 50cc 139QMB/QMA engine. Rocker Arms for GY6 50cc 139QMB/QMA engine.

The 69mm rocker arm assembly is designed to replace the original rocker arms on GY6 50cc 139QMB and 139QMA engines. It ensures precise transmission of camshaft movement to the valves,...

64MM X 16MM OUTLET VALVE RJ3-3-3.  E0217 **PARTS FOR GY650 SCOOTER ENGINE HEAD**

EXHAUST VALVE 69.5MM X 16MM RJ3-3-1.  14721-GY39-0000 **PARTS FOR GY650 SCOOTER CYLINDER HEAD**

64MM X 18.4MM INTAKE VALVE RJ3-3-4.  E0218 **PARTS FOR GY650 SCOOTER CYLINDER HEAD**

INTAKE VALVE 69.5MM X 18.4MM RJ3-3-2.  14711-GY39-0000 **PARTS FOR GY650 SCOOTER CYLINDER HEAD**

Valve stem seal in original part quality from Taiwanese and Japanese car manufacturers. Naraku supplies a two-piece oil scraper ring set for the valves of 4-stroke cylinder heads. Increased oil...