A new updated version of the Substance XL crank with a new invest cast boss design that sits fully flush with the crank arm completely eliminating sharp edges around the ankles.

• BSD Mid 24mm bottom bracket included
• Invest cast boss that sits super flush eliminating sharp edges
• The 24mm diameter spindle is stiffer and stronger butbeing hollow, does not add any extra weight to the cranks compared to 22mm versions
• Heat treated 4130 chromoly arms with a rectangular cross section for increased stiffness and grindability
• RHD / LHD Compatible
• Weight: 1.9lbs