RDR Heavy Duty GY6 Starter Clutch Assembly 170i Precision lapped seats — perfect

Precision lapped seats — perfect 360° seal eliminates compression loss and erratic idle

spill-proof construction

a little contact cleaner can sometimes work wonders

Koso came up with this long lasting solution to replace the OEM chain tensioner which has a tendency to wear out prematurely

Noise Reduction: Cuts wind noise significantly at highway speeds

RDR Heavy Duty GY6 Starter Clutch Assembly 170i Precision lapped seats — perfectRDR Heavy Duty Starter Clutch Assembly for 150cc and 125cc GY6 4 stroke QMI152 157 and QMJ152 157 engines. Keyhole Diameter: 22mm Includes Needle Bearing 3 Rollers Overall Outer Diameter: 87mm Made in Taiwan GY6 QMI QMJ 152 157, Various unlisted makes models