Promax EX-2 Bottom Bracket - 30mm, Black color-black-purple Low profile race tire with

Low profile race tire with ultra-smooth centerline and pressure sensitive side tread that increases corner traction when pushed to the limits

37 Inch x 24 TPI External

Get your mind IN the gutter

Stiff injection engineering thermoplastic

Promax EX-2 Bottom Bracket - 30mm, Black color-black-purple Low profile race tire withPromax EX 2 Bottom Bracket 30mm, Black The Promax EX 2 English bottom bracket features forged and CNC machined aluminum cups, dual lip labyrinth low friction seals, and custom sealed bearings. Strong, stiff and lightweight forged and CNC machined aluminum cups Dual lip labyrinth low friction seals keep elements out without affecting pedal efficiency Custom sealed bearings are smooth and long lasting For use with 30mm diameter crank spindles such as