SkyHawk 66cc Gt5A-ES Engine & OCDT - Pedal & Electric Start = FREE SHIPPING

Grubee Inc


FREE SHIPPING:   New 2018 stock!   

  • Gt5A-ES > 66cc Easy Start Engine
  • Includes OCDT  for Electric Drill starting
  • Save $20 over buying engine and OCDT separately.  
  • Includes TZ High Performance Rotor and TZ CDI; 
  • CCW threaded crankshaft is the secret that allows electric drill starting with an OCDT. 

    No Bicycle installation parts are included.   However; we do include a TZ CDI module that must be used with the TZ High Performance Rotor in this engine.   By including the correct CDI with matching rotor the engine is assured to start.  

     Most sellers have no clue of the differences in CDI Ignition from China.  There are 2 different suppliers    TZ & SD.    To know the difference go to our info, side of our web site and click SkyHawk 2 cycle then go to #7..   

    See the info side of our web site for more pictures and details. 

    Considered one of the most powerful 66cc 2 stroke bicycle engines on the market.. 

    • Dual Start:  Can pedal start normally or can use a 20V Cordless 1/2" drill to electric start
    • These engines have TZ Rotors & TZ magneto field coils with a matching TZ CDI included. 
    • Included OCDT is an attachment tool for a 1/2" drill that enables electric starting. 
    • A 20V Cordless 1/2" drill with OCDT can spin the engine so fast it starts instantly with clutch lever pulled in.
    • OCDT means, "Overrunning Clutch Drive Tool" and is a separate order extra cost item.   
    • OCDT works like a starter drive in a car starter.. 
    • OCDT with drill allows checking mag coil output.  22V AC at 500 RPM  
    • No need to have an expensive and heavy, bulky engine with battery and a ton of headaches with broken pull ropes and starters. 
    • Light weight is the only way to go for a motorized bicycle!
    • Harbor Freight has lowest price for Cordless  20V 1/2" Drills.  Buy the most powerful version.
    • Jim Wilson at Pedal Choppers in FL says Gt5A has 20% more power than brand X engines. 
    • SkyHawk engines has Round exhaust ports to fit round exhaust pipes for free flow scavenging.
    • Big intake port has 40mm M6 stud spacing.  
    • ArBeo / Dellorto Carburetors with #58 Jet work great with this engine but you must be able to correctly install a throttle cable to enable using ArBeo carbs.     
    • New crankcase and new cylinder design for improved power efficiency.   Note where the magneto wires come out down low. 
    • Fits up to 45mm dia. Bicycle down tubes.   Ideal for Aluminum frames.
    • This Gt5A-ES engine zipper fits on our Gt2A aluminum frame w/ built in gas tank as well as some other V frame bikes..
    • Front mounting studs are M8 not the smaller M6 studs found on some cheap brand X engines.
    • Supplied without Gas tank, Chain, Sprocket, Carb, Controls or Muffler which are included in a SkyHawk Installation kit sold separately, 
    • OCDT Electric Drill start sure helps SICK BIKE PARTS multi shift kit work without laborious pedaling to start the engine hence a value enhancement. 
    • Bicycle, and Cordless drill shown in pictures are not included with this engine.