X-Lab GT8 700c Carbon - GRX715 Di2-Branta C45 GT

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.

Key Features

• 5mm Tire Clearance
• Downtube Storage
• Branta Carbon Wheelset

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.

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-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 700x45CMax 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

Sizing & Geometry

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WARNING: This product contains chemicals known to the State of California to cause cancer reproductive harm

The products in this store may expose you to chemicals such as Nickel which are known in the state of California to cause cancer, and Bisphenol A (BPA) which is known to the state of California to cause birth defects or other reproductive harm.

For more information go to https://www.p65warnings.ca.gov