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.
Flush boss design
We've designed the Substance XL V2 crank arm with an invest cast boss that sits super flush eliminating sharp edges that can whack your ankles.
Oversized hollow spindle
The 24mm diameter spindle is stiffer and stronger but being hollow, does not add any extra weight to the cranks compared to 22mm versions.
The Substance XL V2 crank features heat treated 4130 chromoly arms with a rectangular cross section for increased stiffness and grindability.