Vision Metron TT 386Evo Double ChainsetFSA Metron TT 386Evo Double Chainset This top-of-the-line crankset is engineered for TT use as it allows for superior aerodynamics and stiffness. It features 7.5% less drag than its already fast predecessor, so you can maintain a powerful pedal stroke with every rotation. This stunning model's light carbon crank arm construction combined with tough CNC-machined aluminium chainrings, provides the perfect solution for soaring your way past competitors and towards the podium. Features: Arm Material: Carbon Chainring Material: CNC-machined 7075 Aluminium Use: Road, TT, Triathlon Speed: 11 speed Chainrings: 2 Bottom Bracket Compatibility: 386EvoBuy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.