Custom Builds and Performance Parts
  • SSP-G Performance QMB139 Torque Spring Base


    img-qind.JPGSSP-G Performance Torque Spring Base for 50cc QMB139 4-stroke engines and engine based vehicles. 

    The QMB139 Torque Spring Base will allow for smoother torque spring action through the use of ball bearings. This allows the spring to pivot and turn free rather than binding up.