The BSD Substance XL cranks feature a 2.5pc crank design with 4130 heat-treated chromoly arms that increase the crank's strength and thickness and includes a 24mm hollow heat-treated chromoly spindle w/ a single hollow flush mount bolt.
Includes: Arms, 22mm spindle, and bolts only
Note: 24mm spline drive sprockets can only be used on the left hand side
Spindle: 24mm Hollow heat-treated chromoly
Spindle Bolts: 15 x 1mm Hollow flush mount (x1)
Spindle Splines: 48
Sprocket Bolt: 10 x 1.5mm (x1)