FSA Gossamer Pro 50/34T Compact Crankset 170mm BB386 EVO 30mm Spindle Alloy
Crank Arm Length: 170mm. Maximum Power Transfer: Cold-forged AL6061/T6 aluminum crank arms paired with a forged AL7050 30mm spindle for an incredible stiffness-to-weight ratio. Material: AL6061/T6 Arms / AL7050 Spindle / AL7075 Chainrings.