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 RaceFace/Easton CINCH