Colnago G4-X Frameset - FSA STEM INCLUDED!

THIS BIKE INCLUDES AN FSA SMR ACR STEM! - Please contact us for size availability.

Colnago has spent more than seven decades building bicycles that win races — from the cobbles of Paris-Roubaix to the mountain stages of the Tour de France. The Colnago G4-X Frameset carries that institutional knowledge into a discipline that demands something different: not pure speed on clean tarmac, but the ability to hold pace across hours of mixed terrain, loose climbs, and roads that stop being roads altogether. This is a purpose-built gravel frame-set, developed to meet the specific structural and geometric demands of performance gravel riding rather than adapted from an existing road platform.

The carbon layup reflects what Colnago has learned building frames for World-tour teams — tuned deliberately rather than uniformly. Through the bottom bracket and chain-stays, the frame is designed to be stiff, translating pedaling input into forward motion without flex bleeding off your effort. Through the seat-stays and fork, there is a degree of engineered compliance that takes the sustained edge off rough surfaces — not suspension, but a frame that absorbs enough to keep you riding hard when the terrain turns punishing. The geometry sits where competitive gravel riders will feel immediately at home: stable and planted at pace, with enough front-end responsiveness to handle technical sections without demanding constant correction.

Internal cable routing protects your housing from the grit and debris that gravel riding guarantees, and keeps the cockpit clean regardless of what groups-set you build it up with. Flat-mount disc brake compatibility opens the G4-X to virtually any modern hydraulic setup, from electronic shifting systems to more traditional mechanical configurations. The tapered head tube stiffens the front end where precision matters most — at speed, on loose descents, in corners where confidence in the frame beneath you is not a luxury. Available in five sizes from 45cm to 57cm, and two colorways — ICBL and PIGR — the G4-X offers genuine fit range without forcing compromises at either end of the size run.