TOTAL KIT: > FREE SHIPPING SkyHawk 66cc GT5A-ES - Pedal & Electric Start

Gt5A-ES TOTAL ENGINE KIT with installation shim kit

From the Rednecks in the RED State of OK.   FREE SHIPPING   

Prices are higher due to 25% tariff on China made goods. 

  • Pedal start normally or go Electric start.

  • For Electric starting you will need to purchase an OCDT tool sold separately at a cost of $39.95 plus shipping.   

  • Don't believe Fake News about engines with a bore and stroke of 47x40 or 47x 38 as being so called 80cc displacement.  

  • 47 bore x 38 stroke = 66cc 

  • 47 bore x 40 stroke = 69cc  

  • 50 bore x 40 stroke = 79cc 

  • Formula to figure displacement:  3.14xRadius squared x stroke

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 www.grubeeinc.com and click SkyHawk 2 cycle then click #7.  

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

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

Engine & Installation Kit may be shipped in 2 boxes via UPS or USPS or one big box when available.

ES means "easy start" :     Order an OCDT separately.   OCDT is not included this kit.    

This engine has Normal Pedal Starting ability or for an electric start you can use a 18 to 20V cordless 1/2" drill and our OCDT for a quick start without pedaling.    Order OCDT separately

  • GT5A-ES engine has capability for 20V Cordless Drill starting  and also has Normal Pedal Starting ability.   Dual Starting!!!!    It's like carrying a starter and battery in your belt holster.

  • ENGINE Specs:  66cc displacement  / max. power 2.2 kw  / 2.9hp. / 6000rpm

  • TOTAL Kit Includes: TZ High performance CDI Module combined with a TZ high flux density magnum rotor.   Throttle, Cables and Clutch Lever, 2.5L tank plated inside, Brass valve, fuel line, 415 chain, chain guard, 44T sprocket and clamp to spokes Installation kit, Chrome 12A muffler and a High Performance 14.95 dia. slide valve Big Bore Carburetor made exclusively for this size engine.

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

  • Front Mount with M8 studs fits up to a 43mm dia. bike downtube. 

  • For smaller dia. downtubes use have moon shims as required.            We now include a 7pcs Shim kit in with this Kit. 

  • Experience Smooth Electric starting by using our Over-Running Clutch Drive Tool ( OCDT) with a cordless drill.   

  • OCDT is Not included; order separately at $39.85 extra cost and we will include in with this kit and OCDT shipping will be refunded.

  • Carry your OCDT cordless tool in a belt holster for instant starts or stashed away in a saddle bag on your bike.     

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

  • CDI is included and is external mounted on bike frame 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 consider using our extra cost HD Axle wheel that eliminates clamping the 44T drive sprocket to spokes.   

  • Check out our add for HD AXLE WHEELS.   Also check out the info. side of www.grubeeinc.com  

  • Order HD Axle Wheel separately and shipped separately:  
  • For night running attach a handlebar battery powered LED head light which is much more efficient than trying to use a magneto secondary coil.   

  • Bicycle can be people pedaled in normal mode with engine power on or off.    Some folks call this feature hybrid power but that is really a misnomer.   To be considered hybrid you need both electric and gas engine power. . 

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

  • Bicycle, OCDT and cordless drill are NOT INCLUDED and are shown for illustration purpose only.