• Extension + armrest mounts/plates/pads and spacer kit
• Compatible with Metron 4D M.A.S. Handlebar

• The Metron 4D Flat combines the superb ergonomics and aerodynamics of the Metron 4D, with a lower hand position and an innovative optional Modular Aero System (MAS) direct-mount clip-on system for additional versatility.
• Aerodynamic integrated Cable Routing (ACR) recommend for electronic shifting only
• Includes spacer kit, bridge, and computer mount