Huffy Davidson Lightning High Performance 2-Stroke Motorized Bicycle CDI Ignition Coil &ndash; Gas Bike Electrical Ignition Upgrade BOOSTS PERFORMANCE: The Lightning gives you the best performance youve seen out of your 2-stroke engine. Whether youre running a 48cc or a 66/80cc engine, wiring this to your engine will give you the best timed sparks youve ever gotten. KEY PROTECTION: Not only will you get better performance, but with its key-switch ignition you get an added bit of safety. No more worrying about someone grabbing your bike, holding in the clutch, pedaling, and stealing your bike. RELIABLE SPARK: At full throttle your stock will have a hard time giving you the strong, consistent spark you need to ride at high speeds without bogging or sputtering. This will make sure you get a strong spark with every time you hit the gas, whether you feather your throttle or red-line your motor INCREASES MPG: This will give you better fuel economy, i.e. more miles per gallon (MPG), and a cleaner cylinder than before (unused fuel creates deposits and stains your engine) INCREASES TOP SPEED: With this you'll have a faster ride, especially when paired with high performance parts like racing carburetors, super magnetos, and expansion chambers . You'll get less (if not completely eliminate) spark plug fouling, and you'll also have faster starts