Cylinder head 101 OCTANE 139QMB/QMA 50cc, without SAS

Complete cylinder head for the 50cc 139QMB / QMA engine. Unlike many cylinder heads offered, this one comes complete. This means valves, valve springs, valve stem seals, etc. are completely pre-assembled. The cylinder head is thus ready for installation and the fiddly replacement and grinding of the valves in conjunction with required special tools is eliminated.

The head is delivered without secondary air system [SLS]. This can be easily decommissioned, which benefits smoother running and a little more torque.

Rocker arm bridge and camshaft are not included in the scope of delivery. Delivery is as shown.