Blue Line Complete Clutch Drive Assembly - GY6 125/150cc

Blue Line complete rear drive assembly for GY6 125/150/169cc based transmissions on Chinese-produced scooters. A true drop-in replacement — shipped fully assembled with bearings and seals. Includes the clutch bell/drum (round bare metal with 6 oval ventilation holes), centrifugal clutch shoe carrier assembly (3 clutch shoes with friction material and return springs, center bearing hub), and driven rear pulley sheaves. Compatible with all 157QMJ-based engines using QM or FM engine codes. SKU: 1100-1149 | MPN: 164-45.

Key Features:

• Blue Line complete rear drive assembly for GY6 125/150/169cc — clutch bell, clutch shoe carrier, and rear driven pulley included
• Ships fully assembled with bearings and seals — true drop-in replacement, no additional hardware needed
• Clutch bell: round bare metal with 6 oval ventilation holes | 142mm OD | 125mm inner diameter
• Centrifugal clutch: 3 shoes with friction material and return springs | center bearing hub
• 19 splines | 14mm spline bore | 13.6mm spline inner diameter (peak to peak) | 137mm bell outer diameter
• Fits all engines with QM or FM in the engine code — see compatibility table below

Specifications:

• Brand: Blue Line
• SKU: 1100-1149 | MPN: 164-45
• Bell inner diameter: 125mm
• Bell outer diameter: 137mm
• Pulley outer diameter: 142mm (5.6")
• Splines: 19
• Spline inner diameter: 13.6mm (peak to peak)
• Spline bore: 14mm
• Ships: Fully assembled with bearings and seals

Compatibility — 157QMJ-based 125cc / 150cc / 169cc engines:

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

About Blue Line: Blue Line offers OEM-equivalent replacement parts for on-road scooters — direct-fit replacements when OEM parts are unavailable or overly expensive. Quality parts at great prices since 2018.

• Blue Line complete rear drive assembly for GY6 125/150/169cc (SKU: 1100-1149 | MPN: 164-45) — drop-in replacement for 157QMJ-based engines
• Includes: clutch bell/drum (6 oval vents, 125mm ID, 137mm OD), centrifugal clutch shoe carrier (3 shoes + springs + bearing hub), and rear driven pulley (142mm OD)
• Ships fully assembled with bearings and seals | 19 splines | 14mm bore | 13.6mm spline ID (peak to peak)
• Fits all engines with QM or FM in the engine code | Blue Line OEM-equivalent quality since 2018

Brand: Blue Line | SKU: 1100-1149 | MPN: 164-45 | Bell ID: 125mm | Bell OD: 137mm | Pulley OD: 142mm (5.6") | Splines: 19 | Spline bore: 14mm | Spline ID: 13.6mm | Ships: Assembled with bearings and seals | Fits: GY6 125/150/169cc (QM/FM engine codes)

GY6 125cc/150cc/169cc | 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A and other QMJ/QMK/QMI/FM codes | Brands: Wolf, Icebear, Jonway, Tao Tao, Bintelli, ZNEN, SSR, Schwinn, BMS, Velocity, Puma, Baccio, Fly Scooter, Peace Sports and more | SKU: 1100-1149