Amazon.com: Glixal ATKS-03904 High Performance Racing Moped ATV Scooter Torque Spring with Clutch Springs for GY6 125cc 150cc 157QMJ 152QMI Engine (1000RPM,Blue) : Automotive
1,500RPM Clutch Spring Install : Before And After (Minarelli Scooter) - YouTube
Performance Clutch Main Spring, GY6 150
Amazon.com: Powersports Clutch Shoe Springs Set 3pcs Motorcycle Clutch Springs Blue 1500 PRM Replacement for 50cc GY6 Motor Scooters QMB139 : Automotive
How to Repair Broken Spring of Centrifugal Clutch | Webike News
Polini clutch springs for OEM clutches - ScooterSwapShop