• Rear Clutch & Torque Driver Assembly for GY6 125cc 150cc 152QMI 157QMJ Engine | 19-Teeth Spline - goofitmoto
  • Rear Clutch & Torque Driver Assembly for GY6 125cc 150cc 152QMI 157QMJ Engine | 19-Teeth Spline - goofitmoto
  • Rear Clutch & Torque Driver Assembly for GY6 125cc 150cc 152QMI 157QMJ Engine | 19-Teeth Spline - goofitmoto
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Rear Clutch & Torque Driver Assembly for GY6 125cc 150cc 152QMI 157QMJ Engine | 19-Teeth Spline

Rear Clutch & Torque Driver Assembly for GY6 125cc 150cc 152QMI 157QMJ Engine | 19-Teeth Spline

$83.99
$83.99
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Product Overview

Restore the smooth shifting and top-end performance of your scooter with this Complete Rear Clutch & Torque Driver Assembly. Engineered for the heavy-duty demands of GY6 150cc engines, this unit manages the shifting of your CVT belt under load. The kit includes the clutch shoes, torque springs, and the 19-tooth clutch bell. Whether you are navigating city traffic or trail riding on an ATV, this assembly eliminates belt slippage and "chatter," ensuring consistent power delivery across all RPM ranges.

Product Compatibility

Vehicle Type Engine Type Common Brands
Chinese Scooters GY6 125cc (152QMI) TaoTao, Wolf, Bintelli, Ice Bear
Chinese Scooters GY6 150cc (157QMJ) Kymco, SYM, Lance, Gator, Peace
ATVs / Go-Karts 150cc 4-Stroke TrailMaster, Hammerhead, Yerf-Dog
Fitment Note 19-Tooth Spline Check shaft spline count before ordering

Specifications

Feature Details
Clutch Bell Outer Diameter 135mm (5.31")
Torque Driver Pulley Diameter 140mm (5.51")
Spline Count 19 Teeth
Engine Fitment GY6 125cc / 150cc (4-Stroke)
Maintenance Tip Add 2 drops of oil to the bushing before riding

Key Features

  • Complete Secondary Transmission: Includes the rear clutch shoes, heavy-duty torque spring, and the matching 19-tooth clutch bell for a total drivetrain overhaul.
  • Optimized Torque Driver: The 140mm pulley is designed to manage belt tension precisely, preventing "bogging" during uphill climbs and ensuring smooth downshifting when coming to a stop.
  • Precision 19-Tooth Spline: The clutch bell is manufactured with a high-strength 19-tooth spline interface to ensure a perfect, slip-free lock onto your transmission's input shaft.
  • Enhanced Heat Dissipation: The 135mm clutch bell features a vented design to reduce heat buildup, which helps prevent the clutch pads from glazing and extends the life of your drive belt.
  • Versatile Application: A direct "drop-in" replacement for almost all Chinese-manufactured 150cc 4-stroke engines found in scooters, mopeds, buggies, and go-karts.
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Fitment FAQ

Will this part fit my specific model and year?

This rear clutch and torque driver assembly is intended for GY6 125cc / 150cc 4-stroke engines, especially 152QMI and 157QMJ platforms, used on many Chinese scooters, ATVs, and go-karts. It is designed for applications that require a 19-tooth spline clutch bell, 135 mm clutch bell outer diameter, and 140 mm torque driver pulley.

Do I need to match the OEM part number?

Yes. For GY6 drivetrain parts, OEM numbers are often inconsistent across brands, so you should confirm the engine code and physical dimensions. The key fitment checks for this product are GY6 125cc / 150cc engine type, 152QMI or 157QMJ code, 19-tooth shaft spline, 135 mm clutch bell, and 140 mm driven pulley.

What models or situations does this part not fit?

This clutch assembly may not fit 50cc 139QMB engines, 250cc CN250 / CF250 engines, non-GY6 engines, or GY6-style machines using a different spline count, clutch bell diameter, pulley size, belt size, or CVT cover spacing. Some scooters with modified transmissions may also require a different clutch setup.

What should I check before ordering?

Before ordering, count the transmission shaft splines, confirm 19 teeth, measure the clutch bell outer diameter around 135 mm and driven pulley around 140 mm, verify your engine code is 152QMI or 157QMJ, check belt compatibility, and compare the clutch, bell, and pulley shape with your original assembly.