This is a tough bottom bracket from Truvativ that will go as hard as you. The PowerSpline has a heat treated chromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

• Spindle: heat treated chromoly 12 spline  

Specifications

• Model ID: BB-PS-A1
• BB-Frame Interface: English/BSA 68mm
• Crank-BB Interface: Power Spline
• Spindle Length: 113mm Spindle