The mountain bike industry loves new standards. Axles, wheel size, one by only collectively, we've apparently never met an established dimension that we didn't want to immediately change. With the Chris King ThreadFit Bottom Bracket Package for Shimano Mountain, we've taken the guess work out of matching your frame's bottom bracket to your crank by providing everything you need to adapt a 73mm threaded bottom bracket shell to a 24mm mountain bike crank spindle. Matching your axle width is up to you.
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