CVT Pulley Naraku High Speed CNC GY6 139QMA / 139QMB

Newest version (V.2) of the CNC-milled drive pulley from NARAKU. This revised version now allows for mounting the original variator fan pulley and the original star washer. The surface angle has been revised again, which offers slightly higher top speed coupled with sufficient engine power. The CNC-manufactured surface makes for smooth, low-vibration drive belt operation. Different from CNC-milled pulleys for other engine types, this one is toothed so that the electric start can be kept, which saves you the tedious kick starting. On the other hand, this makes the product slightly more expensive to manufacture. Original fan wheel and kickstart pinion can be used, but are not included in the delivery.

• Brand: Naraku
• SKU: NK900.59
• Availability: Currently not 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