TOTAL KIT: > SkyHawk GT5A-ES - Pedal & Electric Drill Start > FREE SHIPPING

Grubee Inc



Includes SkyHawk Gt5A-ES ENGINE & complete INSTALLATION KIT 

The Gt5A-ES engine can be Pedal started or handheld Electric Drill started!    ES means "easy start" : 

FREE UPS SHIPPING to Lower USA States only:     

 Please know that starting on Sept 1st 2021 we will no longer ship to Canada due to our Canadian SkyHawk Dealer in Beamsville Ontario. 

Our Prices are higher due to 25% US tariff on China made goods and much higher shipping cost from China due to being located in the middle of the USA.

  • For Cordless Electric starting use our OCDT tool.  

  • Electric Start means an OCDT works in conjunction with a 20V handheld cordless battery powered 1/2" drill or a modified 1/2" drive impact diver. 

  • ( 1/2" drive impact wrenches and drills must have the hammer affect disabled or you will damage engine and OCDT bearings which is not considered warranty. 

  • Our new Gt5A-ES engines includes the new TZ Red wire Ignition system with the hot new HP Red wire CDI & Magnum high flux density rotor for super quick starts and improved rpm range.  

To know the data driven difference in ignition go to our info. side of and click SkyHawk 2 cycle then click #7.  

GT5A-ES Complete Motorized bike kit;    Everything included except the bicycle.  

        A new addition this year includes a 7 pcs shim kit that allows mounting on 43mm down to 28mm dia. bicycle downtubes!  a $12.00 value

   High Rev SkyHawk Gt5A-ES ENGINE Specs:          66cc displacement  / max. power 2.2 kw  / 2.9hp. / 6000rpm   47mm x 38 mm Bore and Stroke

  • This TOTAL Kit Includes: TZ High performance CDI Red Wire Module combined with a TZ high flux density magnum rotor magnet.  

  • Throttle, Cables and Clutch Lever, 2.5L tank plated inside to prevent rusting, Tank valve, fuel line, 415 chain, chain guard,    Only Gru-Bee tanks are plated inside!

  • 44T sprocket and clamp to spokes Installation kit is included, however, a "HD Axle Wheel" is the best option.  See our HD AXLE WHEEL listing.

  • Chrome 12A muffler and a High Performance 14.95 dia. slide valve Big Bore Carburetor made exclusively for this size engine.

  • Gas tank is 2.5L capacity plated inside to prevent rusting; not the cheap 2L un-plated tanks sold by others in California. 

  • Front Mount with M8 studs and shim kit fits up to a 43mm dia. bike downtube and down to 28mm dia.   M8 stud spacing is 60mm center to center. 

  • We include a 7pcs Half Moon Shim Kit in with this Kit = a $15 value.

  • Experience Smooth Electric starting by using our Over-Running Clutch Drive Tool ( OCDT) with a cordless drill or you can use a modified 1/2" drive impact wrench that has the hammer affect removed to have a smooth run.   See pic here-in. 

  • YES sir; OCDT is included. 

  • Carry your OCDT cordless tool in a belt holster for instant Zip Wing Ding Ding starts or stashed away in a saddle bag.    

  • This engine kit comes with standard chrome muffler and standard NT carburetor.

  • TZ-CDI is included and is external mounted on bike downtube or seat tube.

  • This I-K ( Installation kit ) includes all the necessary parts to install on a bicycle to create a motorized bike or more commonly called a "MOPED".

  • For a pro-shop installation check out our HD AXLE WHEELS at the info. side at  

  • HD Axle Wheel sold separately and shipped separately by UPS :  

  • For night running attach a handlebar battery powered LED head light which is much more efficient than trying to use a magneto secondary coil powered 6V light.   No need to buy a Bullet Train just to get a head light!

  • Your bicycle can be people pedaled in normal mode with the engine power on or off.    

  • Great for those folks with DWI's who need a way to work and also for college students who want to motorize to campus and then people pedal on campus sidewalks with engine off.

  • How does a Suck and Blow 2 stroke engine operate.  Check out this video clip.