SSP-G Performance QMB139 Torque Spring Base

DESCRIPTION: SSP-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 roller bearings. This allows the spring to pivot and turn free rather than binding up. The roller bearings reside inside the machined aluminum cup. No more loose ball bearings! Overall Height: 8.2mm Inner Diameter (Where Spring Sits): 58mm QMB139 50cc/49cc , Various unlisted makes/models