You can still pedal bike like normal with clutch lever held in or locked in with button. To start a 2 Stroke Bicycle Motor just hold in the clutch and pedal to get some speed then release the clutch to "Bump Start" the motor and off you go. To come to a stop once engine is running you can hold in clutch and engine will idle. Push Kill Switch on throttle to kill motor, clutch must be held in when bike is in motion or motor will keep running.

Engine kit will add about 24 lbs to your bike. Fits most standard V frame Men's 24" and bigger, we suggest 26". Engine kit is about 8.5" height 7" length 5" width. Kit fits on standard 25mm - 29mm frame tube.

1. Black Engine – 66cc 2 Stroke
2. One piece Balanced 40mm Crank
3. Grade 8 American Hardware (black allen heads)
4. NEW Speed Carburetor without shut off valve
5. High Compression Head
6. #415 Heavy Duty Chain
7. Gas Tank – 2 Liter {Black Color}
8. Large Frame Front Mount, Bolt On
9. Gas Tank Fuel Valve
10. Gasoline Fuel Line
11. Throttle Handle with Kill Switch - Matching Grip {2 Qty.}
12. Throttle Cable
13. Exhaust Muffler/Pipe - {Silver}
14. Rear Wheel Conversion Hardware - Rubber, Brackets, Nuts and Bolts
15. 41 Tooth Chain Sprocket With 9 Holes {Chrome Color}
16. 4 bolt tall Chain Tensioner Idler
17. Motor Chain Guard - {Black Color}
18. Fuel Filter
19. CDI - Electron Igniting Device
20. Spark Plug {1 Qty.}
21. Heat Sheild Spring
22. Clutch Arm Return Spring
23. Clutch Lever
24. Clutch Cable
25. Large Frame Adapter Bracket and Hardware (For Larger Tube Bikes)

Disclaimer:

• Operating this motorized bicycle or bicycle engine kit involves some risk of serious bodily injury . Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages.
• Seller is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.
• Not all motorized bicycles are permitted for road use. Check with your local Vehicle Insurance services for requirements. We do offer any guarantee for legal road use.
• Although this kit fits MOST bikes, we cannot guarantee that this kit will fit your individual bike. Returns due to size are not accepted.
• China bike engine factories have always advertised their biggest engine as 80cc. However, the bore and stroke of an 80cc being 47x38mm only equals 66cc. Therefore there is no such thing as an 80cc Chinese bicycle motor and it truly does not exist. This is the biggest motor available.
  
• Due to California Air Resource Board Regulations we cannot ship engine kits to California
• Our gasoline operated products are NOT compliant with environmental protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.