4G 1B transmission only: Fits Huasheng 49 & 53cc CC engines

T-Belt drive runs much more quitter 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 higher top speed
  • 20T Drive belt pulley. 
  • 100T Driven belt pulley with integral freewheel.  
  • Allows easy bike pedaling when 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.
  • Bikes in pictures are Not included, shown for illustration purpose only.
  • Check out our www.grubeeinc.com information web page for more details and info.