Colnago G4X GRX 1x Carbon Gravel Bike
The Colnago G4X GRX 1x Carbon Gravel Bike is the latest gravel racing bike from the Cambiago-based brand, designed to replace the G3-X and incorporate the extensive knowledge gained from its successes in cyclocross and road racing. Drawing from the V-Series bicycles made for the UAE Emirates and UAE ADQ WorldTour Teams, the G4-X is a testament to Colnago's storied off-road expertise.
Colnago's dominance in cyclocross, with victories by legends like Sven Nys (six CX World Championships) and Wout Van Aert (two off-road World Championships), underpins the G4-X's design ethos. It shares the V4Rs' balance and aesthetics, delivering a bike tailored to the demands of gravel racing.
A Perfectly Balanced Gravel Bike
Rather than excelling in a single metric like aerodynamics, stiffness, or weight, the G4-X achieves harmony across multiple factors. This balance creates a bike that is comfortable and responsive, even in harsh conditions, and offers a top-tier riding experience in lightness, handling, stability, and aerodynamics.
- Tyre clearance has increased from 40mm to 45mm for improved versatility
- Handling and stability are optimised with frame responsiveness designed for dirt roads and gravel racing
- Lightweight and robust design combines strength with ease of handling for competitive performance
Mounting Points for Adventure
- The frame features four riveted mounting points
- Two on the main triangle for bottle cages
- One under the downtube
- One on the top tube, adding practicality for gravel racing and extended adventures
The G4-X epitomises Colnago's commitment to creating balanced, high-performance bicycles, delivering a gravel bike that demands speed without compromising handling or enjoyment.
Images for display purposes only, not true to spec.
Technical Specification
| BB | T47 Acros |
| Headset | Acros SS 42 x 52 x 7 mm - 40 x 52 x 7 mm |
| Handlebar | Deda Superzero Gravel Alloy |
| Stem | Colnago RS10 Alloy |
| Bar Tape | Velo VLT-1001-01 |
| Seatpost | Colnago Carbon |
| Saddle | Selle Italia Model X |
| Wheels | Fulcrum Rapid Red 900 Db |
| Tyres | Pirelli Cinturato 700-40C |
| Shifters | Shimano BL-RX820 |
| Caliper Disc Brake | Shimano BR-RX820 |
| Front/Rear Disc Brake | Shimano RT-M800 Ø 160 mm |
| Rear Derailleur | Shimano RX-822 |
| Cassette | Shimano CS-M810 10-51T |
| Crankset | Shimano FC-RX820 42T |
| Chain | Shimano CN-M8100 |
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Colnago G4X GRX 1x Carbon Gravel Bike Sizing
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