Adventure-ready gravel bike built for control, comfort, and conquest.
The GT8 is X-LAB’s first gravel platform, built for riders who see every road as an invitation.
Designed for stability, control, and long-distance comfort, the GT8 transitions effortlessly from pavement to dirt, city streets to open trails.
With confident handling and durable carbon construction, it’s a gravel bike that encourages exploration without limits.
Wherever the road disappears, the GT8 keeps going.
Where Gravel Gets Interesting
The GT8 is made for the rides that don’t follow a route. It was born to master uneven terrain, unknown turns, and long mixed-surface days where stability, speed, and confidence all matter at once.
Clearance That Changes the Ride
With up to 55mm tire clearance, the GT8 opens the door to bigger comfort, more grip, and more capability wrapped in colorways that look as fierce as they feel.
The Seat Stay Advantage
A unique seat stay design balances strength, compliance, and precision handling. The GT8 is built to maximize ride performance while staying true to modern gravel standards and race-ready intent.
Key Features
- Branta C45 Gravel carbon wheelset
- Shimano GRX 717 Di2 groupset
- Branta alloy crankset with integrated power meter and Apple Find My anti-theft technology
- In-frame storage and accessory mounting points on frame and fork
Technical Specifications
- FRAME
- XDS Carbon Frame, Toray T-800, UDH Compatible
- FORK
- XDS Carbon Fork, Toray T-800, 100x12mm Thru-Axle
- STEM
- Branta Carbon Stem
- HANDLEBAR
- Branta Gravel Carbon Handlebar
- SEATPOST
- XDS Carbon 27.2mm
- REAR DERAILLEUR
- Shimano GRX RD-RX717
- SHIFTERS
- Shimano GRX ST-RX717
- BRAKES
- Shimano GRX BR-RX715
- CASSETTE
- Shimano CS-M6100-12, 10-51T
- CRANKSET
- Branta Alloy Power Meter Crankset, 40T, Narrow-wide Teeth,
- 24mm Steel Spindle, Apple Find My Anti-Theft Technology
- BOTTOM BRACKET
- T47 24mm
- ROTORS
- Shimano SM-CL700, F:160mm R:160mm
- CHAIN
- Shimano CN-M6100
- WHEELSET
- Branta C45 Gravel Carbon Wheelset, Stainless Steel Spokes
- TIRES
- Continental Terra Trail 700x45C
- SADDLE
- Fizik Terra Argo X7
- WEIGHT
- 8.78 kg / 19.31 lbs (Size M)
Product images are for illustrative purposes only and may not reflect the exact specifications of the item supplied.
Specifications, features, and availability are subject to change without notice due to manufacturer updates and component availability.
Geometry & Dimensions
Basic Geometry (XS / S / M / L / XL / XXL)
- Seat Tube Length 435mm 447mm 471mm 491mm 532mm 577mm
- Top Tube Length 506mm 525mm 547mm 566mm 585mm 605mm
- Head Tube Length 80mm 100mm 120mm 140mm 165mm 190mm
- Seat Tube Angle 76° 75° 74° 74° 73° 73°
- Head Tube Angle 70° 70° 71° 71° 71° 71°
- Chainstay 435mm 435mm 435mm 435mm 435mm 435mm
- Wheelbase 1020mm 1032mm 1031mm 1046mm 1061mm 1078mm
- Bottom Bracket Drop 80mm 80mm 80mm 80mm 80mm 80mm
- Stack: 519mm 540mm 565mm 584mm 607mm 631mm
- Reach: 370mm 379mm 384mm 392mm 399mm 408mm
- Front Center: 598mm 610mm 609mm 624mm 638mm 655mm
- Stand Over: 715mm 730mm 755mm 773mm 807mm 838mm
Component geometry (XS / S / M / L / XL / XXL)
- Fork Rake/Offset: 55mm 55mm 50mm 50mm 50mm 50mm
- Trail: 75mm 72mm 70mm 70mm 70mm 70mm
- Handlebar: 370/430mm 370/430mm 390/450mm 390/450mm 410/470mm 410/470mm
- Stem: 70mm 70mm 80mm 90mm 100mm 100mm
- Crankset: 165mm 165mm 170mm 170mm 172.5mm 172.5mm
- Seat Post: 300mm 300mm 350mm 350mm 350mm 350mm