BSD Substance XL V2 CranksBSD's Substance XL Crank gets a serious upgrade for the V2 model, with a new invest cast boss design sitting fully flush with the crank arm eliminating sharp edges around the ankles. They feature a heat treated 4130 Chromoly, XL 24mm diameter CNC machined 48 spline hollow spindle and heat treated 4130 chromoly arms with a rectangular cross section for increased stiffness and grindability. The BSD Substance XL V2 Crank is both RHD and LHD compatible.