The FSA Gossamer is a high-end crankset for alloy lovers. The cold-forged aluminum arms are heavily scalloped for the maximum strength to weight ratio.The 30mm BB386 EVO spindle is compatible with virtually every frame standard available by choosing the appropriate bottom bracket. The chainrings are CNC machined from still-tougher 7075 aluminum, then recess-machined and pinned for rapid precise shifting. Boosting overall stiffness the Asymmetric Bolt Spacing (ABS) features chainring bolts strategically spaced to provide optimum strength from a 110mm BCD. Available in multiple length and gearing options, the Gossamer fits any combination of bike, rider and riding styles.