FX 4 is where performance fitness bikes begin. A lightweight aluminum frame, a wealth of performance features, and a 1x11 drivetrain that simplifies shifting without sacrificing gear range give you the capability to take on longer commutes and faster recreational rides without sacrificing the versatility that has made FX Trek's best-selling lineup ever.
*spec applies to all sizes unless otherwise noted
Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, flat mount disc, rack & fender mounts, 135x5mm QR
FX Carbon, rack and fender mounts, flat mount disc, 405mm axle-to-crown, ThruSkew 5mm QR
Formula DC-20, alloy, 6-bolt, 5x100mm QR
Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR