10G 1BMS Multi Speed Shift Kit less 1B Transmission

Grubee Inc


10G Multi Speed kit only:    4G 1B transmission is not included:

Shift your motorized bike like a motorcycle!

This add is for those folks who already have an older model 1B trans. and are willing to re-drill 4 mounting holes for a 10 degree down tilt.. Should be done in a machine shop for accuracy. 

If you need a 4G 1B transmission go to the next 10G add which includes a new 8 hole 1B transmission. 

10G  is designed to custom fit the and SkyHawk GT2A bike frame.  Allows using bicycle's multi speed gearing to shift engine power curve.  ie:  5 speed e-bike hub axles work great.  

Do not use a standard bicycle with 2 pt bracket lock.  A 3 pt. lock is required to better secure engine torque loading. 

Mechanical aptitude and tools are needed,.  Engineering degree not required but helpful.

  • This is a 10G shift parts kit only: P/n 1BMS 23456&7 
  • Look closely at the pictures to see what you get.  
  • To order both a 1B Transmission and this Mult-Speed kit see our Total 10G Multi Speed add listing. 
  • This add is for those who already have a 1B 4G 8 hole transmission and also have a Gt2A bike frame.
  • We do not include the following items in this add: 
  • No 4G 1B transmission,
  • No 4 cycle HuaSheng engine;
  • No SkyHawk GT2A Bike Frame,  
  • No bicycle components.  
The Beautiful Blue Multi-Speed bike built by Dave Harber in TN is shown for illustration purpose only:  

    NOTE:  1B transmissions made in 2016 and after have the 4 extra engine mount holes pre-drilled to allow the transmission to tilt down approx. 10 degrees.  see pic. 

     This 10G Kit has been Up Graded:  Our current 10G Multi-Speed KIT production now has a larger size Double Universal Joint with needle bearings versus a smaller one of less durability as was found in initial production of 2016.   This 2017 new DUJ is Definitely a remarkable heavy duty improvement and of course higher priced.   

    Shipped to USA lower via USPS Priority Mail.

    1. Shipment to Alaska or Hawaii will cost more.  Contact us before you buy.