GT8
Description
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
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 Di2
SHIFTERS
Shimano GRX ST-RX717 Di2
BRAKES
Shimano GRX BR-RX410
CASSETTE
Shimano CS-M6200-12, 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-RT70, F:160mm R:160mm
CHAIN
Shimano CN-M6100
WHEELSET
Branta C45 Gravel Carbon Wheelset, Stainless Steel Spokes
TIRES
Continental Terra Trail 700x45C
Max Tire Clearance: 55C
SADDLE
Fizik Terra Argo X7
WEIGHT
8.78 kg / 19.31 lbs (Size M)
SIZE OPTIONS
XS / S / M / L / XL / XXL
*Continuous Product Improvement
Innovation never stands still. As part of our commitment to building the best possible bicycles, X-LAB reserves the right to update specifications, components, colors, and other product details at any time without notice. We make every effort to keep our published specifications current, but minor variations may occur between production batches. Please contact your local X-LAB dealer or Customer Support if you would like to confirm the latest specifications before purchase.
Geometry:
Basic geometry | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|
| A — Seat Tube Length | 435mm | 447mm | 471mm | 491mm | 532mm | 577mm |
| B — Top Tube Length | 506mm | 525mm | 547mm | 566mm | 585mm | 605mm |
| C — Head Tube Length | 80mm | 100mm | 120mm | 140mm | 165mm | 190mm |
| D — Seat Tube Angle | 76° | 75° | 74° | 74° | 73° | 73° |
| E — Head Tube Angle | 70° | 70° | 71° | 71° | 71° | 71° |
| F — Chainstay | 435mm | 435mm | 435mm | 435mm | 435mm | 435mm |
| G — Wheelbase | 1020mm | 1032mm | 1031mm | 1046mm | 1061mm | 1078mm |
| H — Bottom Bracket Drop | 80mm | 80mm | 80mm | 80mm | 80mm | 80mm |
| I — Stack | 519mm | 540mm | 565mm | 584mm | 607mm | 631mm |
| J — Reach | 370mm | 379mm | 384mm | 392mm | 399mm | 408mm |
| K — Front Center | 598mm | 610mm | 609mm | 624mm | 638mm | 655mm |
| O — 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 |
