- Proven 41-Thermal® processed 4130 chromoly - Legendary lifetime replacement warranty - Laboratory tested and team proven - Traditional sprocket interface - Open-ended spindle cap - Wedge cluster band with greater flexibility - Never-Wobble™ crank arm and spindle interface guarantee - 73mm Euro BB spindle length - Flush sprocket bolt hardware for improved clearance - Lengths: 165mm and 170mm - Drive Side: RHD - Spindle: 22mm - Sprocket Interface: Press-fit - (Must use sprockets with 15/16" hole) - Spacer Width: 51.5mm for 73mm BBs - Weight: 1 lb. 11.8 oz. (788g) - US Pat. No. 7,267,030