MATERIAL: 3D forged AL6061-T6
SPEC: Ø27.2 or Ø31.6mm
LENGTH: 300 or 350 or 400mm
OFFSET: 20mm
WEIGHT: 330g/pcs (Ø31.6x350mm)
OPTION: SPA-21A-DI2 (with SHIMANO® seatpost battery collar)