72cc cilinderkit met complete cilinderkop voor 50cc 139FMB of 72cc 147FMB 4T-motorblokken 125cc Skymax and other replicas)

Skymax and other replicas)

- Length: 135mm (from the axis)

the mirrors can be easily secured by tightening them

handlebar holder for Dax and Monkey type handlebars

It is a Lifan 139 FMB-B engine type

72cc cilinderkit met complete cilinderkop voor 50cc 139FMB of 72cc 147FMB 4T-motorblokken 125cc Skymax and other replicas)Product Description Give your horizontal 50cc four stroke engine more torque and better performance with this complete 72cc cylinder and cylinder head kit. The kit is designed for Chinese 139FMB and 147FMB complete engines, as used in various Dax, Monkey, PBR, Cub, and other replicas with a horizontal four stroke engine. A 139FMB is typically a standard 50cc horizontal four stroke engine block. This set increases the displacement to approximately