Complete 48cc Gas Powered Engine Kit

This bicycle engine kit is no longer available due to EPA restrictions on the importation of 2 cycle engines.  CLICK HERE for the new and improved Whopper Stopper Stage II 4 cycle bicycle engine kit.

This page has been left up as a reference.  Please do not attempt to purchase this kit as your order will not be processed.

This kit comes with everything you need to convert most any V-frame bicycle to a 48cc gas powered scooter. Simply clamp on the engine, install the sprocket, gas tank, and other hardware and you'll be up a running in couple of hours. Installation is easy!

Comes with a 1/2 gallon or 1 gallon gas tank FREE UPGRADE TO 1 GALLON TANK FOR A LIMITED TIME.

High quality 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.

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!

Kit Includes: 2 cycle 48cc engine with built in clutch Magneto with kill switch 50 Tooth 9 hole chrome sprocket 1/2 gallon fuel tank - FREE UPGRADE TO 1 GALLON TANK FOR A LIMITED TIME. Chrome FlowRight muffler Clutch handle and cable Twist throttle and cable Drive chain idler Carburetor assembly CD ignition assembly Heavy duty chain Chain tensioner guide Chain guard 2 Spark plugs All the mounting brackets, gaskets, and hardware. Complete users manual / installation instructions. 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.

Here are a few examples of this kit installed. The possibilities are endless! Click on an image for a larger view.