Velopedia Bicycle Archive
2026 X-LAB AD8
Original manufacturer specifications including 105 Di2 drivetrain, 700C wheels, 7.41 kg / 16.3 lbs (Size L) published weight.
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What Velopedia knows
- Model year
- 2026
- Category
- Road
- Original MSRP
- $4,499.00
- Sizes
- XS, S, M, L, XL
- Colors
- Sunspot Red/Black, Starlight Blue/White, Strata Grey/Black
- Weight
- 7.41 kg / 16.3 lbs (Size L)
- Geometry
- 5 manufacturer sizes · Geometry context
- Record coverage
- 22 preserved details · 8 archived images · original MSRP · preserved geometry
- Archive ID
- 900001309
Frameset
| Frame Construction | XDS Carbon Frame, Toray T-800, UDH Compatible |
|---|---|
| Frame Material | Carbon |
| Fork | XDS Carbon Fork, Toray T-800, 100x12mm Thru-axle |
| Fork Material | Carbon |
Drivetrain
| Component Group | 105 Di2 |
|---|---|
| Shifters | Shimano 105 ST-R7170 Di2 |
| Front Derailleur | Shimano 105 FD-R7150 Di2 |
| Rear Derailleur | Shimano 105 FD-R7150 Di2 |
| Crankset | Branta Carbon Power Meter Crankset, 52-36T; 29mm Alloy Spindle, Apple Find My Anti-Theft Technology |
| Bottom Bracket | T47 29mm |
| Cassette | Shimano 105 CS-R7101, 11-34T |
| Chain | Shimano CN-M7100 |
Brakes
| Brakes | Shimano 105 BR-R7170; Rotors: Shimano SM-RT70, F:160mm R:140mm |
|---|
Cockpit & Contact Points
| Handlebar | Branta Carbon Integrated |
|---|---|
| Stem | Branta Carbon Integrated |
| Saddle | Selle Italia SLR Boost, Carbon Rails |
| Seatpost | XDS Carbon Seatpost, Aero Profile |
Wheels & Tires
| Wheels | Branta C45 UL, Carbon Rims & Spokes |
|---|---|
| Front Tire | Michelin Pro 5 700x28C; Max Tire Clearance: 32C |
| Rear Tire | Michelin Pro 5 700x28C; Max Tire Clearance: 32C |
| Wheel Size | 700C |
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 |
|---|---|---|---|---|---|
| Seat tube | 470 mm | 495 mm | 515 mm | 540 mm | 565 mm |
| Top tube | 504 mm | 523 mm | 540 mm | 559 mm | 579 mm |
| Head tube | 105 mm | 118 mm | 130 mm | 148 mm | 171 mm |
| Head-tube angle | 71° | 72° | 73° | 73° | 73° |
| Seat-tube angle | 75° | 75° | 74° | 74° | 73° |
| Chainstay / rear center | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 970 mm | 978 mm | 982 mm | 992 mm | 1007 mm |
| Bottom-bracket drop | 72 mm | 72 mm | 70 mm | 70 mm | 70 mm |
| Reach | 371 mm | 379 mm | 387 mm | 395 mm | 405 mm |
| Stack | 505 mm | 520 mm | 534 mm | 553 mm | 575 mm |
| Standover height | 753 mm | 774 mm | 792 mm | 811 mm | 834 mm |
| Front center | 575 mm | 582 mm | 583 mm | 592 mm | 607 mm |
Geometry source: X-LAB first-party Basic geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
XS geometry
Archive context: Its wheelbase of 970 mm sits toward the shorter end. Its stack of 505 mm sits somewhat lower than typical. The seat angle of 75° sits somewhat steeper than typical.
Compared with 64 distinct road geometries in the XS-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XS geometry S geometry
Archive context: The seat angle of 75° sits toward the steeper end. Its wheelbase of 978 mm sits somewhat shorter than typical. Its stack of 520 mm sits somewhat lower than typical.
Compared with 88 distinct road geometries in the Small-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze S geometry M geometry
Archive context: Its stack of 534 mm sits toward the lower end. Its wheelbase of 982 mm sits toward the shorter end. The head angle of 73° sits toward the steeper end.
Compared with 88 distinct road geometries in the Medium-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M geometry L geometry
Archive context: Its wheelbase of 992 mm sits toward the shorter end. Its stack of 553 mm sits toward the lower end. The seat angle of 74° sits toward the steeper end.
Compared with 77 distinct road geometries in the Large-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze L geometry XL geometry
Archive context: Its stack of 575 mm sits toward the lower end. Its wheelbase of 1007 mm sits somewhat shorter than typical. The chainstay of 410 mm sits somewhat shorter than typical.
Compared with 63 distinct road geometries in the XL-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XL geometry Parts & serviceability
Find replacement parts
Shimano CN-M7100
Exact archived model
Shimano 105 CS-R7101, 11-34T
Exact archived model
Michelin Pro 5 700x28C; Max Tire Clearance: 32C
Named tire and published size
More qualified parts (4)
Shimano 105 BR-R7170
Brake model identified — verify pad shape
Selle Italia SLR Boost, Carbon Rails
Named archived component — verify exact version
Shimano 105 FD-R7150 Di2
Exact archived model
Shimano 105 ST-R7170 Di2
Exact archived model
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
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 X-LAB AD8 · Road · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: XDS Carbon Frame, Toray T-800, UDH Compatible · Fork: XDS Carbon Fork, Toray T-800, 100x12mm Thru-axle · Carbon
Drivetrain
Check drivetrain wear →Archived: Group: 105 Di2 · Shifters: Shimano 105 ST-R7170 Di2 · Front derailleur: Shimano 105 FD-R7150 Di2 · Rear derailleur: Shimano 105 FD-R7150 Di2 · Crankset: Branta Carbon Power Meter Crankset, 52-36T; 29mm Alloy Spindle, Apple Find My Anti-Theft Technology · Bottom bracket: T47 29mm · Cassette: Shimano 105 CS-R7101, 11-34T · Chain: Shimano CN-M7100
Brakes
Inspect the brakes →Archived: Brakes: Shimano 105 BR-R7170; Rotors: Shimano SM-RT70, F:160mm R:140mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700C · Wheels: Branta C45 UL, Carbon Rims & Spokes · Front tire: Michelin Pro 5 700x28C; Max Tire Clearance: 32C · Rear tire: Michelin Pro 5 700x28C; Max Tire Clearance: 32C
Controls and contact points
Archived: Handlebar: Branta Carbon Integrated · Stem: Branta Carbon Integrated · Seatpost: XDS Carbon Seatpost, Aero Profile · Saddle: Selle Italia SLR Boost, Carbon Rails
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.