Velopedia Bicycle Archive
2026 Colnago C68 Gravel Shimano GRX 1x
Cyclocross/Gravel bicycle from the Velopedia specification archive.
- Original MSRP
- From $8,537.00
- Sizes
- 450, 480, 510, 540, 570
- Colors
- G3G2, HGBK, RVWH
- Geometry
- 5 manufacturer sizes · Ride analysis
- Archive ID
- 900000336
Current market
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Velopedia analysis
What the specifications mean
The 510% cassette range describes the available gearing more clearly than the component-group name alone. The rims and tires are tubeless-ready, but that label does not confirm the bike is currently set up without tubes; tape, valves, sealant and tire condition still matter. Carbon construction changes the inspection emphasis from metal-style dents and corrosion to impact damage, ripples and overtightened clamp areas.
Gearing
510% cassette range
Calculated from the published 10–51-tooth sprocket span.
Tire setup
Tubeless-ready
The rims and tires may support tubeless use, but the bike may still be running tubes.
Frame material
Carbon / composite
Look for impact damage and clamp marks rather than metal-style dents or rust.
Bottom bracket
Threaded interface
Shell width, thread standard and crank-spindle interface still require confirmation.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- DrivetrainShift through the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
- Bottom bracketTurn the cranks slowly, feel for rough bearings and check for side-to-side play. Creaking under load deserves investigation but does not identify the source by itself.Inspect the bottom bracket and shell →
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2026 Colnago C68 Gravel Shimano GRX 1x · Cyclocross/Gravel · Published sizes: 450, 480, 510, 540, 570
Frame and fork
Inspect the frame and fork →Archived: Frame: Modular carbon frame construction: 8 carbon parts. · Fork: Colnago carbon fork for disc brakes, integrated cables. · Carbon fiber
Drivetrain
Check drivetrain wear →Archived: Group: Shimano GRX 1x · Shifters: Shimano ST-RX820 · Front derailleur: This groupset has a single chainring. · Rear derailleur: Shimano GRX 1x: Shimano RD-RX822-SGS · Crankset: Shimano GRX 1x: 42T · Bottom bracket: T47 Shimano with Steel Bearings · Cassette: Shimano GRX 1x: 10-51 12v · Chain: Shimano GRX: Shimano CN-M8100 12V
Brakes
Inspect the brakes →Archived: Brakes: Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors
Wheels and tires
Check wheels and tires →Archived: Wheels: Fulcrum Rapid Red 900 DB | 2-Way Fit Ready (for tyre and tubeless ready) · Rims: Material: Rims: aluminium, Spokes: stainless steel.; Rim Height: Front: 24.1 mm; Rear: 24.1 mm; Internal Channel Width: 22 mm · Hubs: Aluminium, Sealed Cartridge Bearings · Front tire: Pirelli Cinturato Gravel H TLR (40-622) · Rear tire: Pirelli Cinturato Gravel H TLR (40-622)
Controls and contact points
Archived: Headset: ACROS ss 1"1/4 3547 steel bearing · Handlebar: Colnago CC.01 integrated Cockpit - Wide geometry. · Stem: CC01 integrated cockpit · Seatpost: Carbon seatpost, 0.15 offset, "D-Shape" section · Saddle: Option 1Prologo DimensionOption 2Selle Italia Novus MG
Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | Modular carbon frame construction: 8 carbon parts. |
|---|---|
| Frame Material | Carbon fiber |
| Fork | Colnago carbon fork for disc brakes, integrated cables. |
| Fork Material | Carbon fiber |
Drivetrain
| Component Group | Shimano GRX 1x |
|---|---|
| Shifters | Shimano ST-RX820 |
| Front Derailleur | This groupset has a single chainring. |
| Rear Derailleur | Shimano GRX 1x: Shimano RD-RX822-SGS |
| Crankset | Shimano GRX 1x: 42T |
| Bottom Bracket | T47 Shimano with Steel Bearings |
| Cassette | Shimano GRX 1x: 10-51 12v |
| Chain | Shimano GRX: Shimano CN-M8100 12V |
Brakes
| Brakes | Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors |
|---|
Cockpit & Contact Points
| Headset | ACROS ss 1"1/4 3547 steel bearing |
|---|---|
| Handlebar | Colnago CC.01 integrated Cockpit - Wide geometry. |
| Stem | CC01 integrated cockpit |
| Saddle | Option 1Prologo DimensionOption 2Selle Italia Novus MG |
| Seatpost | Carbon seatpost, 0.15 offset, "D-Shape" section |
Wheels & Tires
| Hubs | Aluminium, Sealed Cartridge Bearings |
|---|---|
| Wheels | Fulcrum Rapid Red 900 DB | 2-Way Fit Ready (for tyre and tubeless ready) |
| Rims | Material: Rims: aluminium, Spokes: stainless steel.; Rim Height: Front: 24.1 mm; Rear: 24.1 mm; Internal Channel Width: 22 mm |
| Front Tire | Pirelli Cinturato Gravel H TLR (40-622) |
| Rear Tire | Pirelli Cinturato Gravel H TLR (40-622) |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | 450 | 480 | 510 | 540 | 570 |
|---|---|---|---|---|---|
| Effective top tube | 520 mm | 545 mm | 569 mm | 590 mm | 600 mm |
| Head tube | 130 mm | 130 mm | 157 mm | 185 mm | 212 mm |
| Head-tube angle | 75° | 70.5° | 70.5° | 70.5° | 70.5° |
| Seat-tube angle | 75° | 74° | 73.5° | 73.2° | 73° |
| Chainstay / rear center | 425 mm | 425 mm | 425 mm | 425 mm | 425 mm |
| Bottom-bracket drop | 72 mm | 74 mm | 72 mm | 72 mm | 72 mm |
| Reach | 375 mm | 386 mm | 397 mm | 408 mm | 419 mm |
| Stack | 541 mm | 555 mm | 580 mm | 605 mm | 630 mm |
| Front center | 596 mm | 612 mm | 632 mm | 652 mm | 660 mm |
| Fork length / axle-to-crown | 409 mm | 409 mm | 409 mm | 409 mm | 409 mm |
| Crank length | 170 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm |
| Stem length | 80 mm | 90 mm | 100 mm | 110 mm | 120 mm |
Geometry source: Colnago first-party labeled geometry panels ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry interpretation
What this geometry means
450 geometry
Riding position
A 375 mm reach and 541 mm stack give this size a middle-ground gravel proportion: neither especially stretched and low nor unusually upright. A 75° seat angle puts the rider relatively forward over the bottom bracket, shortening the effective seated reach compared with a more relaxed seat angle.
Handling tendencies
The 75° head angle points to quicker-steering steering geometry. Head angle is only one part of steering feel; fork offset, trail, wheel size and cockpit setup also matter. A 72 mm bottom-bracket drop places the rider relatively low between the wheels, which can add a settled cornering feel while reducing pedal clearance compared with a higher bottom bracket.
Archive context
The head angle of 75° sits toward the steeper end. The seat angle of 75° sits somewhat steeper than typical. The chainstay of 425 mm sits somewhat shorter than typical.
480 geometry
Riding position
A 386 mm reach and 555 mm stack give this size a middle-ground gravel proportion: neither especially stretched and low nor unusually upright.
Handling tendencies
The 70.5° head angle points to moderate and balanced steering geometry. Head angle is only one part of steering feel; fork offset, trail, wheel size and cockpit setup also matter. A 74 mm bottom-bracket drop places the rider relatively low between the wheels, which can add a settled cornering feel while reducing pedal clearance compared with a higher bottom bracket.
Archive context
Its reach of 386 mm sits somewhat longer than typical. The seat angle of 74° sits somewhat more relaxed than typical. The chainstay of 425 mm sits somewhat shorter than typical.
510 geometry
Riding position
A 397 mm reach and 580 mm stack give this size a middle-ground gravel proportion: neither especially stretched and low nor unusually upright.
Handling tendencies
The 70.5° head angle points to moderate and balanced steering geometry. Head angle is only one part of steering feel; fork offset, trail, wheel size and cockpit setup also matter. A 72 mm bottom-bracket drop places the rider relatively low between the wheels, which can add a settled cornering feel while reducing pedal clearance compared with a higher bottom bracket.
Archive context
The chainstay of 425 mm sits somewhat shorter than typical. Its reach of 397 mm sits somewhat longer than typical. The seat angle of 73.5° sits somewhat more relaxed than typical.
540 geometry
Riding position
A 408 mm reach and 605 mm stack give this size a middle-ground gravel proportion: neither especially stretched and low nor unusually upright.
Handling tendencies
The 70.5° head angle points to moderate and balanced steering geometry. Head angle is only one part of steering feel; fork offset, trail, wheel size and cockpit setup also matter. A 72 mm bottom-bracket drop places the rider relatively low between the wheels, which can add a settled cornering feel while reducing pedal clearance compared with a higher bottom bracket.
Archive context
The chainstay of 425 mm sits somewhat shorter than typical. Its reach of 408 mm sits somewhat longer than typical. The seat angle of 73.2° sits close to the middle of the group.
570 geometry
Riding position
A 419 mm reach and 630 mm stack give this size a middle-ground gravel proportion: neither especially stretched and low nor unusually upright.
Handling tendencies
The 70.5° head angle points to moderate and balanced steering geometry. Head angle is only one part of steering feel; fork offset, trail, wheel size and cockpit setup also matter. A 72 mm bottom-bracket drop places the rider relatively low between the wheels, which can add a settled cornering feel while reducing pedal clearance compared with a higher bottom bracket.
Archive context
The chainstay of 425 mm sits somewhat shorter than typical. Its reach of 419 mm sits somewhat longer than typical. The seat angle of 73° sits somewhat more relaxed than typical.
Across the size range
From 450 to 570, reach grows by 44 mm and stack by 89 mm, showing how the frame becomes both longer and taller through the published size range. The rear center stays essentially constant at about 425 mm across sizes, so most of the wheelbase growth happens in the front half of the bike rather than by lengthening the rear triangle.
Geometry describes frame proportions and likely tendencies, not a ride test. Rider proportions, cockpit setup, tires, suspension settings, wheel configuration, and component choices can materially change how a bicycle fits and feels.
Gallery
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.