The idea behind the Spire Cranks was to take the proven 2 & ½ piece system and combine it with a super tough, box-section arm design that will remain incredibly stiff and dent resistant.

After a year of testing from Bruno Hoffmann and the rest of the PRO team, the end result is a super strong and reliable crank built to shred.

Material: Tubular heat-treated 4130 CrMo arms & CrMo axle

Axle: 22mm CrMo ultra hollow

Strong, lightweight cranks

RSD & LSD compatible

22mm hollow heat-treated spindle

Smooth and rounded ankle friendly spindle boss

Weight: 901g.