BSD Substance Cranks|Black/160mm|Black/165mm|Black/170mm|Black/175mm|Raw/165mm|Raw/170mm|Raw/175mm

Single bolt design, 2.5pc cranksHeat treated 4130 chromoly arms with rectangular cross section for increased stiffness.Heat treated 4130 chromoly 22mm diameter CNC machined 48 spline hollow spindle.Extra beefy pedal boss with angle on the back for frame cl