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

Grubee Inc


    GruBee 10G Multi Speed kit;  
    Includes the famous 4G 1B 20T/100T Transmission with 8 mounting holes.
    Everything you need except 4-stroke HuaSheng engine and bicycle.  
    • 10G Multi Speed allows the engine to have multi ratio torque curves  just like a motorcycle transmission.  
    • Installation does require mechanical aptitude and basic shop tools.    
     A Total 10G kit Includes a 4G 1B 8 hole 20T/100T Freewheel Transmission, and 1BMS Multi-Speed bracket ( parts 1 thru 7 shown on drawing including WP-CK pedal shaft big hole conversion kit.
     Everything you need except a Gt2A bike frame with built in gas tank and a HuaSheng 49 or 53cc 4 stroke engine with built in 3 shoe centrifugal clutch!  
       Don't know how it got started but some folks call these Huasheng engines tapered shaft engines.   Funny thing is you can't tell it has a tapered shaft unless you remove the centrifugal clutch.   
    •  Late model 4G 1B Transmissions now have 8 holes for 10 degree tilt, 
    • A new and improved HD Double U Joint Jackshaft drive is now included. 
    • 10G Multi Speed kits is Custom Designed to fit our Skyhawk Gt2A built in gas tank frame with small or big bottom bracket hole.   
    • If you have an early Gt2A frame with a big bottom hole you will need to use the included WP-CK conversion kit.
    • 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 or a heavy duty e-Bike 5 speed hub axle that 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.
    • We only supply the compatible parts to build your dream.  
    • Inspiration through imagination and fortitude must come from you. 
    • Read carefully to know what is NOT included: 
    • NOT INCLUDED;    Gt2A Bike Frame:  
    • Use 135mm dropout for 3 to 5 speed Hub Trans. and 150mm dropout for a Shimano derailer system or for a fat 3" tire.
    • NOT INCLUDED:   HuaSheng 49cc or 53cc engine with Centrifugal Clutch order separately from us or from JIMCO ph. 816 331 4738.
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    • Read Carefully below what is INCLUDED:
    • INCLUDED:  Model 1B Freewheel Transmission  20T/100T pulleys and 9T slide sprocket,   Late model 1B's have 8 mounting holes to allow for a 10 degree downward mounting,.
    • INCLUDED:   MultiSpeed 1BMS-23456  3 point engine attach bracket made to fit our Gt2A built in gas tank frame.    Includes the improved Heavy Duty Double Universal Joint Jackshaft right side drive, 
    • INCLUDED:    P/n 1BMS-7 bottom hole components, shaft, pedals, hub, chain and sprockets.    Note:  as of Aug 1st we also include a WP-CK small bottom hole to big hole conversion kit as most Gt2A frames need it.
      •  NOTE:  The Gt2A Built in gas tank frame shown on the motorized bike pic is obviously Not included with this kit but we have to say so.  Illustration purpose only:
      • If the Gt2A frame you have is the old style and has a big bottom hole for a one piece crank you will also need to buy the WP-CK small hole to big hole conversion kit.  2018 model Gt2A Frames have the small bottom hole so a WP-CK conversion kit is not needed.
      • The beautiful Blue bike with the long poo poo pipe in attached pics was built by our good friend Mr. Dave Harber in TN..  
      • 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 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 hub axle transmissions and 150mm drop out for derailer 6 speeds or fat tire applications,..  
      • Happy Trails to you and enjoy the ride!