Gru-Bee SkyHawk 4 cycle engine kit for Bicycle, Bicycle engine 4G 7G 10G

FOB Reference Price:Get Latest Price
200 Unit/Units (Min. Order)
Supply Ability:
1000 Unit/Units per Month
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Quick Details
Motorized bicycle engine kit
Gas / Diesel
Engine Type:
Max. Speed:
< 40km/h
Brand Name:
Place of Origin:
Jiangsu, China (Mainland)
Model Number:
4G-model 1 A B & C
Doner Bicycle brakes
T Belt Drive Motorized Bike kit:
4 cycle engine for bicycle
Packaging & Delivery
Packaging Details
Installation Kits individually boxed: HuaSheng or Honda Engines sold seperately and are not included with kits: Buy engines direct from the manufacture to get 1st line quality and factory warranty. Depending on qty ordered Kits are bulk packed in a Container or shipped LCL on skid pallets.
Delivery Time
Shipped in 0 days after payment


            4G T belt drive for 4 cycle gas engine

                             USA Patent Pending:

    GruBee SkyHawk V frame INSTALLATION KIT for Bicycle Engine:

   Kit 4G- Model 1 For HuaSheng 49cc and 53cc engine with centrifugal clutch.

   Kit 4G- Model 2 For Honda 50cc engine with PTO straight shaft.

  • Installation kits available for 4 stroke HuaSheng 49cc 142F-1G engine and also for Honda 50cc GXH50 .
  • Install engine using our kit in a few hours and them go 0 to 30 in 6 seconds!!!!
  • 4 cycle engine operation, means no oil mix in gas tank!
  • Depending on sprocket ratio bike speeds are attainable up to 45KM / hr. with an adult rider on flat land.
  • Many transmission ratios and final drive ratios available:
  • Transmission Output drive sprockets available: > 10T solid / 11T feewheel or 12T HD freewheel
  • Select a Solid driven pulley or the new built in freewheel driven pulley option;  both available in: 80T / 90T or 100T
  • 4G Silent T belt transmission Has No gears; No oil;  No noise;  No muss;  No fuss;
  • Get over 100 miles per gallon of fuel when using above mentioned small 4 cycle gas engines.
  • V- frame engine mount kit gives the motorcycle look.
  • Many muffler options available including our famous Poo Poo Pipe.
  • Tear drop gas tank, all controls, chain & sprocket as well as an optional heavy duty axle with a freewheel hub.
  • We supply the complete installation kit:   US Patent Pending belt drive transmission.
  • The WD distributor can buy Huasheng engines direct from the engine factory and installation kit from us. 
  • We prefer you buy HuaSheng engines direct from Peter Zhu at HuaSheng to get 1st line quality, best price and warranty.
  • Honda GHX50 engines are not available from China.
  • Beware of others in China who want to sell you 4 cycle engines with no name. Possible factory rejects!
  • 4G transmission kits make 2 cycle bike engines obsolute!   
  • 4G Installation kits are made by GruBee and sold by China GAS in our own factory in Changzhou China.
  • HD axle kits available to eliminate clamping 44T to 56T rear wheel drive sprockets to wheel spokes.
  • Gt2A-S special made aluminium bike frames available with built-in gas tank.
  • NOTE: We only sell to franchised Wholesale Distributors in min. order quantity of 200 kits.   Individuals and Small dealers buy from WD's
  • We build once a year in May and ship in June.    Send your company profile along with your inquiry.    
  • Check our web sites;     and

If you would like to be a WD distributor in the motorized bike engine industry we want to talk with you!  Join us in this new industry.

Send us your Co. profile and business plan to receive pricing and WD consideration.  Sending your inquiry without your company profile, business name, location and without a Business Plan will result in no reply back..