American to European Bottom Bracket Adapter Are you looking to convert your bike to have a 3-piece pedal crank? Having difficulties with fitting your bottom bracket into your current frame? Then the American to European Bottom Bracket Adapter is for you! Designed to convert an American 68mm Bottom Bracket to a Standard Bottom Bracket this part is perfect for those tricky builds. Not to mention installation is a breeze! Simply remove your current bearing cups, press in the new adapter, tighten the bearing cups down, and enjoy your conversion. So, if your looking to take out the headache of installing your new threaded 3-piece crank, this part is for you! Compatible with BBR Tuning 26 Inch Motorized Bicycle Frames