
Fiction US BB to MID BB adapter
Description
Adapters for changing the bottom bracket system from US BB to MID BB.
If you have a BMX bike with a US BB frame with a one-piece crank and want to replace the crank with a three-piece - these adapters solve the problem.
With this kit you can change the bottom bracket system in your frame from US BB to MID BB.
Easy to assemble - just slide the MID BB bearing into this kit and insert into the frame.
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