Our Single magneto belt drive setup provides easy starts and the reliability of magnetos just like is still used in aircraft today! Our design incorporates a timing lever for advancing and retarding the timing with the flip of a lever and not having to move the mags to do so. Simply flip the lever for timing adjustments for less kickback and then slide it back to the full advance setting when the bike fires up. The belt provides zero backlash when compared to the typical gear drive mag setups to maintain a proper timing setting and hold it perfectly. We use only the best Morris Magneto for the mags and guts with rare earth rotors for maximum sparking power! Unit comes with cam and pinion bushings installed, reamed, pinned, and ready to bolt on! Mag units ship out in one-two weeks after order is placed once mags and units are assembled. Will only fit evo up to 92!! Please specify when ordering shovel or evo. Thanks!