Static pulley GY6 type 139QMB / 139QMA, Kymco 4-stroke

Static front pulley for GY6 139QMB/QMA engines as well as Kymco 4-stroke engines and Kymco models with horizontal engine.

• Brand: GY6
• SKU: OE-GY6BT12018
• Availability: In stock

Notes and Safety CVT PulleysPulleys are an integral part of the CVT system on scooters and mopeds with automatic CVT transmission. The continuously variable transmission consists of fixed and moving pulleys, the V-belt rises and falls between them depending on the engine speed, changing the speed of the vehicle.When should you change a pulley?There are two reasons for replacing pulleys:Wear and tear. Although pulleys are relatively durable, the constant sliding of the V-belt can deform the surface.Tuning. Different pulley angles and diameters can improve the handling of scooters or mopeds.Note: A CVT variator can only do a good job when CVT pulleys as well as torque drive pulleys are compati