XDS X-LAB AD8 Road Bike
The XDS X-LAB AD8 Road Bike is built for riders who want high-level performance with a balanced aero design. It combines aerodynamic tube shaping with a lightweight carbon frame to create a fast and efficient road bike. Streamlined frame profiles, dropped seat stays and internal cable routing help reduce drag while keeping the design clean and modern. A fully integrated cockpit completes the race-ready setup. The XDS-ASTANA team races the flagship AD9 in the UCI WorldTour, and the AD8 benefits from the same engineering approach and geometry.
XDS uses Toray T800 carbon construction to balance stiffness, durability and weight. This structure provides great power transfer during hard efforts while maintaining comfort on long rides. The geometry focuses on performance with stable handling and responsive acceleration, making it well suited for club racing and fast group rides.
The AD8 comes equipped with reliable Shimano 105 electronic shifting and hydraulic disc brakes for consistent stopping power. A Branta C45 UL carbon wheelset and integrated cockpit complete the build, delivering a smooth and efficient ride experience.
With its advanced carbon construction, modern aero design and value-focused components, the XDS X-LAB AD8 offers a strong option for riders looking to upgrade to a fast and capable road bike.
Crank lengths and handlebar sizes vary with each frame size, please see the Geometry tab for sizing.
Product Details
Key Features of the XDS X-LAB AD8
- Aero Tested Design: Aero frame shape borrowed from the AD9 with a streamlined seat tube, fork and seatstays lets the frame slip through the air, conserving watts.
- Performance Build: The X-LAB AD8 comes with Shimano 105 12-Speed Di2 components. XDS swap out the Shimano crankset for a Branta carbon fiber power meter crankset, adding versatility for training and race-day analytics.
- Lightweight, Aero Wheelset: In addition, this bike comes equipped with a high-performing Branta C45 UL carbon wheelset. Featuring a deep profile and carbon bladed spokes, it comes in at only 1330 grams.
- Modern Compatibility: The rear UDH derailleur hanger keeps this bike current and compatible with most drivetrain configurations.
- Rigorous Quality Control: Extensive testing to ISO and ASTM standards makes this frame UCI compliant, and XDS back themselves with a lifetime warranty on the frame, fork and carbon wheelset.
Compatibility
The XDS X-LAB AD8 Road Bike is widely compatible with most modern road components. It is compatible with wheelsets that are disc brake and use 12×100 mm front and 12×142 mm rear thru axles. In addition, this bike uses a T47 86mm threaded bottom bracket shell, and uses a UDH rear derailleur hanger. See Compatibility tab for more information.
Considerations
The fully-internal cable routing is optimized for the included Branta one-piece handlebar. Therefore, using your own barstem is not seamless. Moreover, the geometry of the AD8 is optimized for performance and speed, so it is less suited for ultra-edurance events.
Advice From Our Staff
The XDS X-LAB AD8 borrows the same geometry of the AD9 but at a more agreeable price point. The Shimano 105 Di2 build offers serious value and we see the Branta carbon power meter crankset as a smart addition for both training and racing. While it might not be as light as the AD9 and adds around 600 grams, the AD8 is still a very lightweight aero build. Riders who want a modern road bike with high value components will find the AD8 a great option.
Other Versions to Consider
XDS X-LAB AD9 Road Bike: We also offer the flagship XDS X-LAB AD9 Road Bike, raced on the UCI WorldTour. It has higher-end components and a different carbon layup, but the same geometry.
Compatibility
- Groupsets: This bike is compatible with mechanical, wireless and Di2 groupsets. It is not compatible with electronic, wired Campagnolo groupsets.
- Tires: The maximum tire width for the AD8 is 32 mm. Most 700c tires measure the same as their stated width, but not all.
- Brake Rotors: The maximum rotor size for the AD8 is 180 mm for the front and 160 mm for the rear.
- Wheelset: Compatible with 12x100 mm front and 12x142 mm rear thru axles wheelsets.
- Saddle Rail: The carbon seatpost is compatible with 7 x 9 mm carbon saddle rails.
- Handlebar/Stem: This bike is only compatible with the included Branta Carbon Integrated One-Piece Handlebar.
XDS X-LAB AD8 Specs
| Name | XDS X-LAB AD8 Road Bike |
| Frameset | XDS X-LAB AD8 Carbon Road Frameset |
| Color Scheme | Sunspot Red/Black |
| Derailleur Hanger | UDH |
| Wheelsize | 700c |
| Frame Sizes | XS | S | M | L | XL |
| Rear Dropout | 12 x 142 mm Thru Axle |
| Fork Dropout | 12 x 100 mm Thru Axle |
| Seatpost Shape | D |
| Seat Rail Compatibility | Carbon 7 x 9 mm |
| Seatpost Offset | 0 mm |
| Frameset Material | TORAY T800 Carbon Fiber |
| Color | Sunspot Red/Black |
| Max Tire Clearance | 700x32C |
| Max Brake Rotor Size | 180 mm (Front) | 160 mm (Rear) |
| Bottom Bracket Type | T47 86 mm (Inboard) Threaded |
| Brake Type | Flat Mount Disc |
| Warranty | Lifetime on frame, fork and Branta Wheelset (with registration) |
| Handlebar | Branta Carbon Integrated Barstem (see Geometry tab) |
| Seatpost | XDS Carbon Seatpost, Aero Profile |
| Rear Derailleur | Shimano 105 Di2 RD-R7150 12-Speed |
| Front Derailleur | Shimano 105 Di2 FD-R7150 |
| Shifters | Shimano 105 Di2 ST-R7120 |
| Brakes | Shimano 105 BR-R7170 |
| Cassette | Shimano105 CS-R7101, 11-34T 12-Speed |
| Crankset | Branta Carbon Powermeter Crankset, 52-36T, 29mm Aluminum Spindle |
| Rotors | Shimano SM-RT70, F:160mm R:140mm |
| Chain | Shimano CN-M7100 |
| Wheelset | Branta C45 UL, Carbon Spokes |
| Tires | Michelin Pro 5 700x28C |
| Saddle | Selle Italia SLR Boost, Carbon Rails |
| Compatible Drivetrains | Mechanical | Wireless | Di2 |
| UCI Approved | Yes |
| Weight (without pedals) | 7.41 kg/16.33 lbs (Size L) |
Branta C45 UL Wheelset Specs
- Wheel Size: 700C
- Rim Material: T800 + T700 Carbon Fiber
- Hub Spacing: Front 12x100 | Rear 12x142
- Internal Rim Width: 22 mm
- External Rim Width: 30 mm
- Rim Depth: 45 mm
- Spokes: Carbon Bladed
- Tubeless Compatible: Yes
- Max Pressure: 120 psi (Tubed) | 100 psi (Tubeless)
- Freehub Body: Shimano HG
- Ratchet Mechanism: Ratchet
- Ratchet Engagement: 36T/10°
- Brake Rotor Type: CenterLock
- Weight Limit: 242 lbs/110 kg
- Wheelset Weight: 1350 grams
Branta Carbon Power Meter Crankset Specs
- Location of Power Measurement: Spider
- Left or Both Legs Measured: Both
- Independent Left/Right Measurement: Yes
- Crank Arm Material: Carbon Fiber
- Communication Protocol: ANT+ and Bluetooth Smart
- Claimed Accuracy: +/- 1.0%
- Battery Type: Rechargeable
- Battery Life: 150 Hours
- Weatherproofing: IPX7
- Spindle Size: 29 mm DUB
- Q Factor: 148
- Weight: 661 grams (165 mm, 52/36T)
In The Box
- XDS X-LAB AD8 Road Bike
- Integrated Out-Front Computer Mount
- XDS Bottle Cage
- Rechargeable Rear Tail Light
- XDS Mini-Pump
- XDS Torsion-style Torque Wrench Tool
- Power Meter Magnetic Charging Cable
- Reflectors
- User Manual
Note: while this bike comes partially assembled, we recommend taking it to your local bike shop for final assembly.
XDS X-LAB AD8 Geometry

| Diagram | Measurement | XS | S | M | L | XL |
| Rider Height Recommendation | 5'1" - 5'5" | 5'5" - 5'9" | 5'9" - 6'1" | 5'11" - 6'3" | 6'3" - 6'7" | |
| A | SEAT TUBE LENGTH (mm) | 470 | 495 | 515 | 540 | 565 |
| B | TOP TUBE LENGTH (mm) | 504 | 523 | 540 | 559 | 579 |
| C | HEAD TUBE LENGTH (mm) | 105 | 118 | 130 | 148 | 171 |
| D | SEAT TUBE ANGLE | 75° | 75° | 74° | 74° | 73° |
| E | HEAD TUBE ANGLE | 71° | 72° | 73° | 73° | 73° |
| F | CHAIN STAY LENGTH (mm) | 410 | 410 | 410 | 410 | 410 |
| G | WHEELBASE (mm) | 970 | 978 | 982 | 992 | 1007 |
| H | FORK RAKE (mm) | 48 | 48 | 43 | 43 | 43 |
| I | BOTTOM BRACKET DROP (mm) | 72 | 72 | 70 | 70 | 70 |
| J | STACK (mm) | 505 | 520 | 534 | 553 | 575 |
| K | REACH (mm) | 371 | 379 | 387 | 395 | 405 |
| L | FRONT CENTER (mm) | 575 | 582 | 583 | 592 | 607 |
| TRAIL (mm) | 67 | 63 | 64 | 61 | 59 | |
| STEM (mm) | 90 | 90 | 100 | 100 | 120 | |
| HANDLEBAR WIDTH (cm) | 36 | 36 | 38 | 38 | 40 | |
| CRANKSET LENGTH (mm) | 160 | 160 | 165 | 165 | 170 | |
| SEAT POST LENGTH (mm) | 300 | 350 | 350 | 350 | 300 |
Branta Integrated One-Piece Handlebar Geometry
- Width at Hoods: 36 cm | 38 cm | 40 cm
- Width at Drops: 39 cm | 41 cm | 43 cm
- Stem Length: 90 mm | 100 mm | 120 mm
- Reach: 70 mm
- Drop: 125 mm
- Stem Angle: -6°
- Flare: 7°
Q&A
Have a question about this? Ask the staff.
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