2026 Colnago Y1Rs Shimano Ultegra Di2

Archived: 2026 Colnago Y1Rs Shimano Ultegra Di2 · Road · Published sizes: XS, S, M, L, XL

• Confirm the frame markings and seller description match this archived model. Note every component that differs from the published build.
• Record the frame serial number. It should be legible, unaltered and consistent with the seller’s ownership history.
• Find the size marking on the bicycle and confirm the fit before judging the condition or price.

Archived: Frame: Colnago Y1Rs carbon frame · Fork: Bayonet fork for disc brakes, integrated cables

• Inspect the frame in bright light, especially the head tube, bottom-bracket area, chainstays and clamped surfaces. Look for cracks, ripples, crushed sections or signs of impact.
• Stand behind and in front of the bicycle to look for obvious frame, fork or wheel misalignment. Ask directly about crashes, transport damage and repairs.
• Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

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

• Confirm every shift battery charges and every control operates. Shift through the full cassette under light load while checking pairing, derailleur alignment and response at both ends of the range.
• Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Archived: Brakes: Shimano Ultegra R8170, 160 mm Front / 140 mm Rear, RT-CL900 rotors

• Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.
• Before riding, test every installed brake separately at walking speed. Each should stop firmly and release cleanly without its control reaching the end of its usable travel.

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

• Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
• Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.
• Remove and reinstall or closely inspect both wheel-retention systems. Axles or quick releases should tighten correctly with undamaged threads, hardware and dropouts.

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)

• Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
• Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

• Before riding, confirm both wheels are secure, tires are safe, both brakes function, and the headset, handlebar, stem, cranks and pedals have no looseness.
• Begin at low speed. Test steering, braking and shifting progressively, then load the drivetrain and suspension only after the basic safety checks pass.
• Listen and feel for repeated knocks, grinding, skipping, brake pulsation or movement at joints. Stop the test if the bicycle cannot be controlled safely.