The BSD Substance XL v2 cranks feature a 2.5pc crank design with rectangular cross section 4130 heat-treated chromoly arms, invest cast flush boss design, and includes a 24mm hollow heat-treated chromoly spindle w/ a single hollow flush mount bolt. RHD/LHD compatible. Includes 24mm MID bottom bracket.
Spindle: 24mm Hollow heat-treated chromoly
Spindle Splines: 48