How to install a bottom braket on your BMX Bike (Video ENG)
It will happen in the course of time, that's your bottom bracket broke down. If you do not know exactly how you should install a new bearing, then you look at this video! Basically, the bottom bracket differ in "loose ball" and "sealed bearing". The loose ball bottom bracket are installed in many cheap beginners bikes. The bearings in turn differ in different sizes. Starting with the largest outer diameter are US-BB, MID-BB, SPAN-BB and EURO-BB. The EURO-BB you recognize the screw thread and are rarely built on a BMX frame. This is important, first you have to check if you have a 19mm or a 22mm axle crank!