Dr. Pulley HiT Clutch 161301 with Bell for Scooters with 50cc/90cc/100cc Honda, Piaggio, PGO, Kymco or SYM engines with 107mm clutch bell diameter as well as scooters with 50cc, 4-stroke QMB139 engines. 

Please Note: Does not fit Honda Metropolitan or Honda Ruckus.
 
The Dr. Pulley HiT Clutch with 50 degree pillow springs is for use on scooters with a modified cylinder requiring the clutch to engage at a higher RPM. Results from using this clutch include decreased slippage and improved transmission efficiency.