GY6 Performance Adjustable Sheave Clutch Pulley

Adjustable Sheave Clutch Pulley for GY6 125cc - 200cc Engines

This adjustable sheave clutch pulley is built to work with GY6 transmissions covering 125cc through 200cc. Its six-groove layout lets you pick straight grooves for a sharper launch or curved grooves for smoother pickup and a higher top speed. It is one of the GY6 scooter parts you can use to improve how your scooter performs overall.

Adjustable Performance Options

Six grooves give you room to set up the ride you want. Straight grooves provide quick, linear acceleration for riders who want a more responsive feel. Curved grooves engage more gradually, giving smoother acceleration and better top-end speed.

Engine Match and Fitting

This pulley is made for "Large Frame" GY6 engines, namely the 157QMJ and 152QMI models found in a range of scooters. It works well alongside Big Bore Kits and Performance Variators, so it suits riders planning a broader upgrade.

Specifications

• Clutch Seat OD: 142mm
• Pulley Needle Bearing: HK202918RST
• Internal Bearing: 6901RS (12mm ID)
• Groove Options: 3 Straight (Acceleration) / 3 Curved (Top Speed)
• Fits: GY6 large-frame engines (157QMJ / 152QMI) in 125cc, 150cc and 170cc scooters

Fitment

Compatible with:

• Engines 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A (125cc, 150cc, 169cc)
• Other QMJ, QMK and QMI engines (engine code contains QM or FM)
• Wolf Rugby II and EX-150
• Wolf Lucky II and Jet II
• Tao Motor Powermax 150
• Tao Motor Lancer 150 and VIP Future Champion (142mm seat OD)
• Ice Bear Vision and Maddog 150
• Amigo Rappi and Znen
• Lance PCH 150 and Cabo 150
• Lance Cali Classic and Havana Classic 150

How to choose: Confirm that your engine code appears in this list or contains QM or FM, and that your clutch seat measures 142mm OD.

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