Name Stage6 Torque Spring soft Yamaha Aerox / BW's Item No. S6-5216601 Brand Stage6 Diameter 105 mm
Pressure on the belt is one of the key factors in a transmission. If the spring is too soft, the belt might slip and rub against the side of the pulley. If the spring is too hard, the belt will be kept from moving. In both cases, you will lose power to the rear wheel, so don't forget to check on them!
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