SSP-G Adjustable Rear Drive Sheave - GY6 125/150

Dial in how your scooter puts power to the ground with the SSP-G adjustable rear drive sheave for GY6 125/150 engines. Selectable guide tracks let you tailor the rear pulley's shifting behavior to your riding style, from a sharper launch to more consistent cruising RPM. It's a useful tuning upgrade when matching your CVT to a big-bore cylinder, performance exhaust or other engine modifications.

Key Features

• Selectable shift profiles: Change the guide-track selection to adjust how the rear pulley responds as the CVT shifts.
• Launch-focused tuning: The straight/linear track option favors faster immediate take-off and acceleration-oriented setups, including drag-racing builds.
• Cruising-focused tuning: The curved track option favors consistent cruising RPM and top-end-oriented shifting.
• Match your engine upgrades: Tune rear-pulley behavior alongside roller weights and clutch/contra-spring selection to suit your engine's power delivery.
• Sheave-only upgrade: Replaces the sliding rear drive sheave within a compatible pulley assembly, rather than supplying a complete rear pulley.

Technical Specifications

• Brand: SSP-G
• Part number: 169-28
• Part type: Adjustable sliding rear drive sheave / torque driver
• Overall outer diameter: 142mm
• Inner diameter: 34mm
• Engine application: Compatible GY6 125cc and 150cc four-stroke engines
• Engine codes: 152QMI / 157QMJ
• Scope: Sheave only, not a complete rear pulley, clutch or clutch-bell assembly

Compatibility

Check the stamped engine code and compare the original sheave's dimensions, hub engagement and guide-pin arrangement before ordering. Engine code alone does not establish fitment. Reuse compatible mating pulley components or source them separately as required.

Track selection changes shift behavior, not the engine's power output. Results depend on the complete CVT setup and engine combination; no specific RPM or top-speed gain is guaranteed.

This product is intended for off-road use only. This product is not intended for use on public roads or land.

• Selectable guide tracks for rear CVT shift tuning
• Straight/linear tracks favor immediate take-off and acceleration-oriented tuning
• Curved tracks favor consistent cruising RPM and top-end-oriented shifting
• Helps match CVT behavior to big-bore cylinders, performance exhausts and other upgrades
• Sliding rear drive sheave only, not a complete pulley assembly
• 142mm outer diameter and 34mm inner diameter

Brand: SSP-G; Part number: 169-28; Type: adjustable sliding rear drive sheave / torque driver; Outer diameter: 142mm; Inner diameter: 34mm; Application: compatible GY6 125/150cc four-stroke engines; Engine codes: 152QMI / 157QMJ; Track selection: straight/linear for launch-oriented tuning, curved for cruising/top-end-oriented shifting; Scope: sheave only, not a complete rear pulley, clutch or clutch bell; Verify dimensions and guide-pin arrangement; Off-road use only

Compatible GY6 152QMI 125cc and 157QMJ 150cc four-stroke engines; verify stamped engine code plus 142mm outer diameter, 34mm inner diameter, hub engagement and guide-pin/track compatibility; engine code alone does not establish fitment; sheave only