The NINJA bottom bracket doesn’t just solve the problem of noisy bottom brackets - it actually improves the life of the bottom bracket and makes your bike stiffer. There aren’t many times a replacement part actually improves your bike but put one on your bike and you’ll wonder why you didn’t install a NINJA sooner. Frame Type BB86/BB89.5/BB92(dia.41x86.5/89.5/92) PF30(dia.46x68/73) BB30(dia.42x68/73) Crank Type SHIMANO(dia.24)
