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Compatibility
We highly recommend using the NCY Engine Bore Tool Order part number 1400-1001 if you do not have access to a machine shop
Verified Fitment
the cooling fins at the base of the cylinder come in contact with the flywheel
Legal Disclaimer: For off-road use only
Blue Line Rocker Arm Assembly (Type 2, 69mm); 139QMB Small Frame CompatibilityThis rocker arm assembly is for Type 2 139QMB engines that use a 69mm length valve stem and a taller head (Type 1 engines have a shorter head and 64mm length valve stem). Original Parts For Scooters SKU 151 282 Specifications: Height: 26mm For use with 69mm valves Compatibility: 139QMB based 50cc 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA 2 YN139QMB JJ1P39QMB 139FMA 2 BD1P39QMB BN139QMB 147QMD Other QMA models Other
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