SHEET 211 OF 309 · Colnago · 2026 · gravel
G4-X Shimano GRX 820 2x
Carbon gravel frame with 42mm tyre clearance, a 48/31 GRX 820 chainset and alloy wheels on 40mm Pirelli tyres.
How it scores
Calculated from the published specifications below. See the formula.
- Comfort
- 70
- Speed
- 34
- Climbing
- 62
- Versatility
- 41
- Value
- 0
Full specification
✓ Specs checked against the manufacturer
Last checked 4 Sept 2026 against the manufacturer's own page . The weightfigure is our estimate — the manufacturer publishes none. Caveat: Geometry is Colnago's size 540 row, the nearest of its five sizes to a 56cm gravel frame by stack and reach. Price is Colnago's own GBP figure from its UK store for the GRX 820 2x setup. Weight is an estimate: Colnago publishes no complete-bike weight. Colnago badges no model year on the page, so the year is the catalogue current at the date checked, and it documents no mudguard or rack mounts, which are recorded as absent.
- Price (RRP)
- £4,101
- Frame
- carbon
- Groupset
- Shimano GRX 820 2x12 mechanical
- Shifting
- Mechanical
- Weight
- 9.5 kg (claimed, size 56/M)
- Brakes
- Disc
- Stack / reach
- 591 / 400 mm (ratio 1.48)
- Tyre clearance
- 42 mm
- Stock tyres
- 40 mm
- Lowest gear
- 31×36 (23 gear inches)
- Mudguard mounts
- No
- Rack mounts
- No
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