The Ruktion combines the strength of the Howitzer BB set, with our proven High Pressure die cast crank arm technology. Like all of our other cranks, the Ruktion is 3D modeled, plus it features fully replaceable heat treated rings. Our cromoly pedal inserts set the standard for high strength pedal interfaces. The Howitzer BB features oversized bearing external BB design combined with a heat treated Cromoly spindle with a high strength spline. Triple, Double and Downhill single speeds are available. Combines the strength of the Howitzer BB set with SRAM's proven High Pressure die cast crank arm technology.