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
. Chainline: 48.5mm
. Weight (G): 363 based on: BSA 73mm, 113mm spindle