10G Multi Speed Shift Kit Includes 4G-1B transmission

Grubee Inc


Sorry, this item is out of stock

GruBee 10G Multi Speed kit & 1B 20T/100T transmission: 

Shift your motorized bike like a motorcycle!  

10G is designed to attach to a SkyHawk GT2A big bottom hole or GT2B small bottom hole built in tank frame to enable having a 3 point lock engine bracket securement.  

Cannot be used on a Straight Downtube Frame Bike or on a GT2BS frame. 

  • 4G 1B 20T/100T Transmission with 8 mt. holes.  
  • 10G Kit with Double Universal Joint jackshaft 9T drive.
  • 3 Pt. attach Engine Bracket made to fit a GT2A or a GTB frame.
  • All Bottom end right side parts except chain and pedals are included;    
BENIFITS:  10G Multi Speed allows you to use a bicycle's rear wheel gears .    Shift gears like a motorcycle even if stationary provided a Multi Speed hub is used!   ie:  Can Use a 3 to 5 speed hub axle or a 6 or 7 speed derailer system.  
  • Installation does require mechanical aptitude and basic shop tools along with possible field modifications and misc. small parts obtained locally.  ie; Chain and pedals.
 Most everything special you need is included except a Gt2A or GT2B bike frame with built in gas tank and a HuaSheng 49cc or 53cc 4 stroke engine with integral built in 3 shoe centrifugal clutch!    
  • Late model 4G 1B Transmissions now have 8 holes for a 10 degree tilt which is necessary to use 10G jackshaft drive. 
  • A new and improved Needle Bearing Double U Joint Jackshaft drive with needle bearings is now included. 
  • 10G Multi Speed kit is Custom Designed to fit either our Skyhawk Gt2A or GT2B built in gas tank frames  advantage = 3 pt. lock.
  • Don't use with a standard bicycle frame.  By using a Pedestal Mount frame you get a 3 pt. lock attachment which better controls engine torque. 
  • If you have an early Gt2A frame with a big bottom hole then you will need to use the included WP-CK conversion kit.   GT2B frames have a small bottom hole for a 3 piece pedal crank system. 
  • 10G works well with either a 3 or 5 speed Nexus or Shimano rear wheel hub transmission or can use a 6 multi speed Shimano Derailer system.  A heavy duty e-Bike 5 speed hub axle which works best.   
  • The builder or end user must accept all product liability as you are the prime contractor and vehicle manufacture even if done in your own back yard.   
  • Inspiration via imagination combined with fortitude and ambition must come from you. 
  • Look carefully to know what is NOT included: 
  • NOT INCLUDED;   Gt2A / Gt2B Frame or Bicycle:  
  • NOT INCLUDED:   Bicycle chain and left and right pedals.  
  • NOT INCLUDED:   HuaSheng 142F-1G / 144F-1G engine with centrifugal clutch:  
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The beautiful Blue bike with the long poo poo pipe shown in attached pics was built by our good friend Mr. Dave Harber in TN..    Shown for illustration only.  
  • Here's Contact info. for JIMCO.  an authorized Huasheng engine dealer in Raymore MO.  ph # 816 331 4738. / 816 868 0288.  
  • We prefer you buy your engine from an authorized HS dealer who can better give after sale parts and service.. 
  • We hope to have Gt2A frames in stock later on this year or as soon as our capital venture will allow.    
  • Use 135mm frame drop out for multi speed hub axles and 150mm drop out for derailer 6 speed or fat tire applications,..  
  • Happy Trails >  enjoy your DIY 10G build and ride with the wind!