Nice bike, I had a very similar Cruiser 5 a few years back, they are awsome riders. These bikes have industrial wheels on them that work great for motorized bikes but with the drum brake, I don't think you can run a sprocket. I like Joe's idea of running a belt drive swapping out the rear wheel is also an option but will be hard to match the wheels....Kelly

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I'm racin' Spitfire, turnin', poppin' wheelies, burnin' evil chasin' pop,pop, pop,pop,pop.... (The Pixies-Tony's theme)