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The Skyhawk Stage III Whopper Stopper |
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This 4 stroke motorized bicycle engine kit comes with everything you need to convert most V-frame bicycle to a 49cc gas powered scooter. Simply clamp on the engine, install the sprocket, gas tank, and other hardware and you'll be up a running in a couple of hours. Installation requires some tools and a moderate mechanical apptitude.
High quality 4 stroke Hua Sheng engine gets you 150mpg with top speeds of about 35 MPH (pretty fast on a bicycle). These things are built to last and require virtually no maintenance.
 With the built in clutch you maintain full function of the original bike. Pedal, shift, and ride your bike like normal. When you want to engage the engine simply release the clutch hand lever and the engine springs to life. To power off simply press the included kill switch.
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Get answers to commonly asked questions in the FAQ's section. |
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Kit Includes:
- 4 cycle 49cc 2.5 hp HuaSheng engine
- Patented stage III gear box with engager
- 11 tooth drive sprocket with freewheel
- Deluxe adjustable mounting plate
- 3 piece wide crank
- 56 tooth 9 hole chrome sprocket
- 2.5L fuel tank
- Chrome FlowRight muffler
- Push button engager lever
- Twist throttle & cable with kill switch
- Handlebar mounted thumb choke
- Heavy duty chain
- Chain tensioner
- Chain guard
- All the mounting brackets, gaskets, and hardware.
- Complete users manual / installation instructions.
- 6 month limited warranty.
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New 4-cycle 49cc Bicycle Engine Kits
Easily Convert Your V-Frame Bicycle!
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Engine Specifications:
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| Engine Type |
Air-cooled 4-Stroke OHV Single Cylinder
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| Max Power(kw/r/min) |
1.5 KW / 2 HP / 6800
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| Fuel Consumption(g/kw·h) |
≤480
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| Fuel Consumption(L/h) |
0.78
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| LWA(dB(A)) |
101
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| Net Weight(kg) |
7
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| Displacement(cc) |
49.1
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| Fuel Tank Capacity(L) |
--
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| Oil Capacity(mL) |
250
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| Ignition System |
TCI
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| Compression Ratio |
7.4
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| Carburetor |
Float
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| Starting System |
Recoil
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| Dimensions(mm) |
288x272x250
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| Package Dimensions(mm) |
400x320x300
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This kit is legal in almost all states. Most laws stipulate that any motorized vehicle under 50cc is legal to operate without a license, registration, or insurance. You can find a kit with a larger engine, but you will be required to have a drivers license and you must license, register, and insure your scooter. Don't bother with the hassle--get the biggest engine available that doesn't require license, registration, and insurance!
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DISCLAIMER: Operating this motorized bicycle or bicycle engine kit involves some risk of 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. Birddog Distributing, Inc. is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit . This kit is not recommended for use by persons under 16 years of age. Obey all traffic regulations. Always wear a helmet while riding. Remember that you are riding a motorized bicycle and other traffic may not be able to see you. Never operate your motorized bicycle on a pedestrian through way or sidewalk while the engine is running. Never operate your motorized bicycle in an unsafe manner. Check local and state laws before riding on streets. Engines larger than 48cc are not legal to operate on the street.
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Looking For Parts, Accessories, & Additional Upgrades?
We stock a full selection of replacement parts & accessories for the 4-stroke engine kit.
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a division of Birddog Distributing, Inc.