Performance Cylinder Head (50mm81ccAlloy) QMB139

81cc Aluminum Performance Cylinder Head.
Great quality alloy cylinder head designed to work seamlessly with
1100-1237
81cc cylinder kit. Give your 139QMB the power to handle today’s city traffic.
You can use this cylinder on all 139QMB engines from SYM, Kymco, QLink, Filly 50 as well as other Chinese scooters with the 139QMB engine.
Note:Rocker arm assembly (part #
1100-1326
) may be required for some models. Please check the valve stem height as it relates to the rocker arms installation.
Be sure to add
an exhaust
, upgrade your
carburetor
and
air filter
for a complete upgrade.
Not legal for use in California on pollution controlled vehicles. Check local laws before installing.