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Free Shipping In Canada On Orders Over $129

4G Model 1B TRANSMISSION 20Tx100TFW x 9T/10T

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Original price $169.99
Original price $169.99 - Original price $169.99
Original price $169.99
Current price $139.99
$139.99 - $139.99
Current price $139.99
Fits HuaSheng 49cc 142F and 53cc 144F engines with tapered shaft and built-in Centrifugal Clutch Model 1B

The T-Belt drive runs much quieter than a chain drive.

4G Model 1B 8 hole T-Belt Drive Transmission only:

20T drive to a 100T driven pulley that jackshafts to 9T or 10T chain sprockets


  • 4G Model 1B only fits HuaSheng F142-1G 49cc and F144-1G 53cc engines with integral 3 shoe centrifugal clutches.
  • Will not fit 5/8" dia. straight shaft engines like the Honda GXH50.
  • Includes 2 sliding drive sprockets, 9T & 10T, for easy chain alignment;
  • 9T sprocket for most torque and 10T sprocket gives a higher top speed
  • 20T Drive belt pulley.
  • 100T Driven belt pulley with integral freewheel.
  • Allows easy bike pedaling when the engine is not running.
  • Belt Cover is ABS plastic. Held on with a 3 point attach bracket.
  • Includes a belt tension adjustment spanner wrench.
  • Has 8 mounting holes to enable using 10G Multi-Speed kit.
  • Multi-Speed kit requires a 10 degree downward tilt of the transmission