Metron 4D Flat M.A.S. Bar w/ J-Bend Extensions Seatposts • For 55mm OD head

• For 55mm OD head tube

• Sculpted contact points for the “hoods” and “drops” riding positions for better ergonomics

• Upper : Campy angular Contact Bearing (Black Seal)

• Universal fitting

• Presses into a BB30 bottom bracket shell with 42mm Inner Diameter (ID) and 68mm width to allow a threaded bottom bracket to be installed

Metron 4D Flat M.A.S. Bar w/ J-Bend Extensions Seatposts • For 55mm OD headThe 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 J Bend extensions included, S Bend available separately Includes spacer kit, bridge, and computer mount SIZING 31. 8mm x W400+10mm, 420+10mm, 440+10mm