BB386

BB386 (widely known as BB386EVO) is a bicycle bottom bracket standard that combines a wide 86.5mm shell with a large 30mm spindle diameter. It merges the stiffness of oversized 30mm crank axles with the structural frame benefits of a wider bottom bracket shell.

Developed by FSA (Full Speed Ahead) and BH Bikes, this standard allows bicycle manufacturers to build stiffer, more responsive frames while maintaining broad compatibility with various cranksets.