The RDLN Adjustable Sheave Clutch Pulley is a high-performance rear torque driver designed for 125cc - 200cc GY6 transmissions. This unit features a unique six-groove design that allows riders to customize their transmission profile: choose the straight grooves for aggressive, linear acceleration or the curved grooves for smoother engagement and optimized top-end speed.

Technical Specifications:

• Clutch Seat OD: 142mm
• Pulley Needle Bearing: HK202918RST
• Internal Bearing: 6901RS (12mm ID)
• Groove Options: 3 Straight (Acceleration) / 3 Curved (Top Speed)

Engine Compatibility:

This pulley is a direct fit for "Large Frame" GY6 engines (157QMJ / 152QMI) commonly found in 125cc, 150cc, and 170cc scooters. It is the ideal companion for Big Bore Kits and Performance Variators.

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.

Popular Models for Upgrades:

This is a top-tier upgrade for the following popular GY6-based scooters often modified for higher performance:

Wolf Brand Scooters

• Wolf Rugby II & EX-150: Heavy-duty commuters that benefit greatly from the improved torque of this pulley.
• Wolf Lucky II & Jet II: Retro-style 150cc models perfect for transmission tuning.

Tao Motor (TaoTao)

• Powermax 150: One of the most common models for performance mods; this pulley helps eliminate the "flat spot" in stock acceleration.
• Lancer 150 / VIP Future Champion: Large-frame sport models that require the 142mm outer diameter seat.

Ice Bear & Amigo

• Ice Bear Vision / Maddog 150: Essential for GY6-swapped Ruckus builds and Maddog clones where low-end take-off is critical.
• Amigo Rappi / Znen: High-style sport scooters that utilize the standard 157QMJ engine platform.

Lance & SYM (Carbureted Models)

• Lance PCH 150 / Cabo 150: Performance-oriented models built by SYM that use the GY6 architecture.
• Lance Cali Classic / Havana Classic 150: Retro cruisers that benefit from the "Curved Groove" setting for smoother city riding.