Description: Cam Chain Guide 203mm for 139qmb 49/50cc 4-stroke engines. This guide sits opposite the chain tensioner and is positioned between the cylinder and the cylinder head. Chain guides porous or torn rubber should be replaced immediately to avoid engine damage.Specifications:Include..
Description: Cam Chain Tensioner for 139QMB 4-stroke engine scooters. Specifications: Includes the following Cam chain tensioner, Phillip screw cap, and O-ring.• 1x Cam Chain Tensioner L: mm / W: mm / Retracted H: mm / Bolt Hole Space: 39mm• 1x..