X-LAB GT8 GRX715 Di2 Afterburner
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If you are ordering - Bikes - online, please call us to discuss delivery instructions before completing your purchase. Please be aware that bikes cannot be shipped directly to customers in their original packaging; however, we can arrange for them to be on-shipped once prepared. Additionally, please note that an assembly fee applies.
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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
| Model | GT8 |
| Frame | X-LAB Carbon Frame, Toray T800, UDH Compatible |
| Fork | X-LAB Carbon Fork, 100x12mm Thru-axle |
| Stem | Branta Carbon Stem |
| Handlebar | Branta Gravel Carbon Handlebar |
| Seatpost | XDS Carbon 27.2mm Seatpost |
| Rear Derailleur | Shimano GRX RD-RX717 |
| Front Derailleur | / |
| Shifters | Shimano GRX ST-RX717 |
| Brakes | Shimano GRX BR-RX715 |
| Cassette | Shimano CS-M6200-12, 10-51T |
| Crankset | Branta Aluminum Power Meter Crankset, 40T, Narrow-wide Teeth, 29mm Aluminum Spindle, Apple Find My Anti-Theft Technology |
| Bottom Bracket | T47 24mm |
| Rotors | Shimano SM-RT70, Front: 160mm / Rear: 160mm |
| Chain | Shimano CN-M6100 |
| Wheelset | Branta C45 GT Carbon Wheelset, Steel Spokes |
| Tires | Continental Terra Trail 700x45C |
| Saddle | Fizik Terra Argo X7 |
| Weight | 8.78KG (Size M) |
| Frame | Size | XS | S | M | L | XL | XXL |
| A | Stack (mm) | 519 | 540 | 565 | 584 | 607 | 631 |
| B | Reach (mm) | 370 | 379 | 384 | 392 | 399 | 408 |
| C | Head Tube Angle (deg) | 70 | 70 | 71 | 71 | 71 | 71 |
| D | Head Tube Length (mm) | 80 | 100 | 120 | 140 | 165 | 190 |
| E | Seat Tube Angle (deg) | 76 | 75 | 74 | 74 | 73 | 73 |
| F | Seat Tube Length (mm) | 435 | 447 | 471 | 491 | 532 | 577 |
| G | Chainstay Length (mm) | 435 | 435 | 435 | 435 | 435 | 435 |
| H | BB Drop (mm) | 80 | 80 | 80 | 80 | 80 | 80 |
| I | Wheelbase (mm) | 1020 | 1032 | 1031 | 1046 | 1061 | 1078 |
| J | Top Tube Length (mm) | 506 | 525 | 547 | 566 | 585 | 605 |
| K | Front Center (mm) | 598 | 610 | 609 | 624 | 638 | 655 |
| L | Stand-over Height (mm) | 715 | 730 | 755 | 773 | 807 | 838 |
| M | Fork Rake/Offset (mm) | 55 | 55 | 50 | 50 | 50 | 50 |
| N | Trail (mm) | 75 | 72 | 70 | 70 | 70 | 70 |
| Components | XS | S | M | L | XL | XXL | |
| Stem | 70 | 70 | 80 | 90 | 100 | 100 | |
| Handlebar | 370/430 | 370/430 | 390/450 | 390/450 | 410/470 | 410/470 | |
| Crankset | 165 | 165 | 170 | 170 | 172.5 | 172.5 | |
| Seat Post | 300 | 300 | 350 | 350 | 350 | 350 |
| Sizing | Size | XS | S | M | L | XL | XXL |
| Recommended Rider Height | 148 cm – 158 cm 4'10" - 5'2" |
158 cm – 168 cm 5'2" - 5'6" |
168 cm – 176 cm 5'6" - 5'9" |
176 cm – 183 cm 5'9" - 6'0" |
183 cm – 191 cm 6'0" - 6'3" |
191 cm – 202 cm 6'3" - 6'7" |
We use a premium delivery service to deliver all of our bikes to ensure they arrive in the best possible condition. Bicycles from a different warehouse so may arrive separately to any other items ordered. A signature is required to confirm proof of delivery.
All products are sourced from official importers and covered by manufacturers warranty. If you do need to send items back to us please make sure that you retain proof of postage in the event that it is needed.
Your product is covered by a 12 month Warranty or more if you opted for the extended warranty. Make sure you register your product.