The idea behind the Spire Crank 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.
Now available in a super-short 160mm version for use with shorter 12.5″-13″ chainstay frames.
MATERIAL tubular heat-treated 4130 crmo arms & crmo axle
LENGTH 160mm, 170mm or 175mm
AXLE 22mm crmo ultra hollow
COLOR glossy black ED, c.p.
strong box shape arm, gussets on pedal and axle box
strong 2pc design
super short 160mm option
RSD & LSD compatible
smooth and rounded ankle friendly spindle boss
WEIGHT 901g (31.78oz) 170mm