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Naraku
Article no.: NK900.59

Fixed outer half Naraku High Speed CNC, 139 QMA / 139 QMB, Kymco 4-stroke

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Description

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.
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Notes and Safety

CVT Pulleys

Pulleys 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 compatible with each other. Pitches and diameters of the individual elements must be matched so that the V-belt can glide evenly.

Technical details
Fixed outer half Naraku High Speed CNC, 139 QMA / 139 QMB, Kymco 4-stroke
Article no.NK900.59
EAN4250362415844
Weight0,19 kg
BrandNaraku
Product typePulley

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