Truvativ Power Spline Bottom Bracket Review Posted on July 10, 2018November 9, 2018 By ArchSeaLionPosted in Drivetrain ComponentsTagged Cycling, Outdoor Recreation, Parts & Components, Sports & Outdoors, Truvativ Power Spline bottom bracket with CrMo axle and Alloy Cups Alloy Cups 327 grams Power Spline bottom bracket with CrMo axle and Alloy Cups