complete kit for your performance bagger, 24 front sprocket and 54 rear for increased acceleration and better throttle response on the highway, or 25-51 for stock ratio, non o ring chain with an 11,000 pound tensile strength , no stretch drag race chain, less rolling resistance. stainless sprocket bolts, American bearings in the hub and sprocket specialists 7075 aluminum rear sprocket or steel option for you long distance guys for long life, 24-54 is a performance upgrade or 25-51 is stock gear ratio.. either way no more broken belts and the ability to change gear ratio. these ratios fit stock swingarm, if you have a lifted bike (plus 2’s) it may rub on inner primary boss (minor mods to fix) steel sprockets are painted not powder coated