Velopedia Bicycle Archive
2026 Colnago Y1Rs Shimano Ultegra Di2
Road bicycle from the Velopedia specification archive.
- Original MSRP
- From $14,485.00
- Sizes
- XS, S, M, L, XL
- Colors
- SDMX, RVWO
- Weight
- Size M - Dura Ace - Enve 4.5 : 7.2kg without pedals
- Geometry
- 5 manufacturer sizes · Ride analysis
- Archive ID
- 900000264
Current market
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Velopedia analysis
What the specifications mean
Electronic shifting removes the usual shift cable but adds a separate battery and controls, while the 309% cassette range describes how much gearing is available. Carbon construction changes the inspection emphasis from metal-style dents and corrosion to impact damage, ripples and overtightened clamp areas. A threaded bottom bracket still requires the correct shell width, thread standard and crank-spindle interface before replacement.
Drivetrain
Electronic · 309% range
Shift-system battery state joins derailleur setup and sprocket compatibility as a troubleshooting variable.
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.
Published weight
Size M - Dura Ace - Enve 4.5 : 7.2kg without pedals
Frame size, pedals, tire setup and production substitutions can change the measured result.
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 →
- DrivetrainConfirm every shift-system battery charges, every shift control works and the derailleur moves cleanly across the cassette. Make sure the matching shift-system charger is included, then measure chain wear and inspect the cassette teeth.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.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 19 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 Y1Rs Shimano Ultegra Di2 · Road · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Colnago Y1Rs carbon frame · Fork: Bayonet fork for disc brakes, integrated cables
Drivetrain
Check drivetrain wear →Archived: Group: Shimano Ultegra Di2 · Shifters: Shimano ULTEGRA ST-R8170 · Front derailleur: Shimano FD-R8150 · Rear derailleur: Shimano Shadow RD-R8150 · Crankset: 52-36T · Bottom bracket: BSA (English Threaded Bottom Bracket) Shimano · Cassette: 11-34 · Chain: Shimano CN-M8100 12V
Brakes
Inspect the brakes →Archived: Brakes: Shimano Ultegra R8170, 160 mm Front / 140 mm Rear, RT-CL900 rotors
Wheels and tires
Check wheels and tires →Archived: Wheels: VISION SC45 · Rims: Material: VISION SC45Carbon; Rim Height: VISION SC4545 mm; Internal Channel Width: VISION SC4521 mm · Hubs: Fulcrum Wind 420 DBAluminum, Low flanges. Sealed bearing, AdjustableFulcrum Racing 600 DBAluminum, Aluminum flanges Sealed cartridge bearings · Front tire: VISION SC45Pirelli PZero Race 700x28 · Rear tire: VISION SC45Pirelli PZero Race 700x28
Controls and contact points
Archived: Headset: ID:35 OD:47 36°/45° CeramicSpeed SLT Treated Bearings · Handlebar: Colnago CC.01 integrated Cockpit - regular geometry. · Stem: CC01 integrated cockpit · Seatpost: Carbon seatpost, 0 or 15 offset mm · Saddle: Prologo Scratch M5 TiroxSelle Italia Novus Boost EVO TI316 Superflow(subject to stock availability)
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 | Colnago Y1Rs carbon frame |
|---|---|
| Frame Material | Carbon fiber |
| Fork | Bayonet fork for disc brakes, integrated cables |
Drivetrain
| Component Group | Shimano Ultegra Di2 |
|---|---|
| Shifters | Shimano ULTEGRA ST-R8170 |
| Front Derailleur | Shimano FD-R8150 |
| Rear Derailleur | Shimano Shadow RD-R8150 |
| Crankset | 52-36T |
| Bottom Bracket | BSA (English Threaded Bottom Bracket) Shimano |
| Cassette | 11-34 |
| Chain | Shimano CN-M8100 12V |
Brakes
| Brakes | Shimano Ultegra R8170, 160 mm Front / 140 mm Rear, RT-CL900 rotors |
|---|
Cockpit & Contact Points
| Headset | ID:35 OD:47 36°/45° CeramicSpeed SLT Treated Bearings |
|---|---|
| Handlebar | Colnago CC.01 integrated Cockpit - regular geometry. |
| Stem | CC01 integrated cockpit |
| Saddle | Prologo Scratch M5 TiroxSelle Italia Novus Boost EVO TI316 Superflow(subject to stock availability) |
| Seatpost | Carbon seatpost, 0 or 15 offset mm |
Wheels & Tires
| Hubs | Fulcrum Wind 420 DBAluminum, Low flanges. Sealed bearing, AdjustableFulcrum Racing 600 DBAluminum, Aluminum flanges Sealed cartridge bearings |
|---|---|
| Wheels | VISION SC45 |
| Rims | Material: VISION SC45Carbon; Rim Height: VISION SC4545 mm; Internal Channel Width: VISION SC4521 mm |
| Front Tire | VISION SC45Pirelli PZero Race 700x28 |
| Rear Tire | VISION SC45Pirelli PZero Race 700x28 |
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 | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Head tube | 88.5 mm | 108.5 mm | 126.5 mm | 150.5 mm | 176.5 mm |
| Head-tube angle | 70.8° | 71.9° | 73° | 73.5° | 73.5° |
| Seat-tube angle | 75° | 74.5° | 74° | 73.7° | 73° |
| Chainstay / rear center | 408 mm | 408 mm | 408 mm | 408 mm | 408 mm |
| Bottom-bracket drop | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm |
| Reach | 368 mm | 377 mm | 386 mm | 395 mm | 404 mm |
| Stack | 495 mm | 520 mm | 540 mm | 565 mm | 590 mm |
| Fork offset / rake | 55 mm | 49.5 mm | 45 mm | 42.5 mm | 42.5 mm |
| Front center | 577.5 mm | 579.5 mm | 581 mm | 590 mm | 606 mm |
| Trail | 61 mm | 59.5 mm | 57.5 mm | 57 mm | 57 mm |
| Fork length / axle-to-crown | 376.5 mm | 376.5 mm | 376.5 mm | 376.5 mm | 376.5 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
XS geometry
Riding position
The 495 mm stack is low relative to the 368 mm reach, giving the frame a performance-oriented, lower-front-end proportion with more potential for a stretched riding position. 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 70.8° head angle points to more stability-oriented 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 stack of 495 mm sits toward the lower end. Its trail of 61 mm sits toward the lower-trail end. The chainstay of 408 mm sits somewhat shorter than typical.
S geometry
Riding position
The 520 mm stack is low relative to the 377 mm reach, giving the frame a performance-oriented, lower-front-end proportion with more potential for a stretched riding position. A 74.5° 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 71.9° head angle points to more stability-oriented 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
The chainstay of 408 mm sits somewhat shorter than typical. Its stack of 520 mm sits somewhat lower than typical. The seat angle of 74.5° sits somewhat steeper than typical.
M geometry
Riding position
The 540 mm stack is low relative to the 386 mm reach, giving the frame a performance-oriented, lower-front-end proportion with more potential for a stretched riding position.
Handling tendencies
The 73° 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
Its trail of 57.5 mm sits toward the lower-trail end. The head angle of 73° sits toward the steeper end. Its stack of 540 mm sits toward the lower end.
L geometry
Riding position
The 395 mm reach and 565 mm stack form a moderate road-bike proportion, balancing cockpit length with front-end height rather than pushing to an extreme race-low or endurance-upright shape.
Handling tendencies
The 73.5° 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 head angle of 73.5° sits toward the steeper end. Its stack of 565 mm sits toward the lower end. The seat angle of 73.7° sits somewhat steeper than typical.
XL geometry
Riding position
The 404 mm reach and 590 mm stack form a moderate road-bike proportion, balancing cockpit length with front-end height rather than pushing to an extreme race-low or endurance-upright shape.
Handling tendencies
The 73.5° 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 head angle of 73.5° sits toward the steeper end. Its reach of 404 mm sits toward the longer end. Its stack of 590 mm sits toward the lower end.
Across the size range
From XS to XL, reach grows by 36 mm and stack by 95 mm, showing how the frame becomes both longer and taller through the published size range. The rear center stays essentially constant at about 408 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.