Replacement for BB-ES25, now 25g lighter
Tubular 22mm spindle for Octalink V2 crank arms
More rigid assembly than square taper
Sealed cartridge bearings
Mounting bolts not included
The Chiru MIPS lets you push your limits mountain biking without sacrifice. A MIPS layer and deep coverage at the sides and rear of the helmet helps protect your head against unexpected knocks. Chiru MIPS has the Virginia Tech 5-Star protection rating.