X-LAB GT8

X-Lab GT8 - Full Carbon Gravel Bike

X-Lab GT8 Gravel Bike – Full Carbon Shimano GRX Di2 Gravel Bike at Bike Attack

Take your gravel riding to the next level with the X-Lab GT8, a premium full carbon gravel bike designed for riders who want race-level speed, all-road versatility, and advanced technology in one incredibly refined package. Built around a high-performance XDS Toray T-800 carbon frame and matching Toray T-800 carbon fork, the X-Lab GT8 delivers a lightweight, responsive, and confidence-inspiring ride for gravel racing, bikepacking, mixed-terrain adventures, and fast endurance miles.

Engineered for modern gravel cyclists, the GT8 combines stiffness, comfort, and control with a performance-focused geometry and premium carbon components. The frame is UDH compatible, adding future-ready versatility and easy derailleur hanger compatibility. Up front, the bike features a Branta carbon stem and Branta gravel carbon handlebar, giving riders a lightweight cockpit with excellent vibration damping and confident handling on rough roads, dirt, and loose terrain. An XDS 27.2mm carbon seatpost further enhances comfort on long gravel rides by reducing trail chatter and fatigue.

The drivetrain is built around the cutting-edge Shimano GRX Di2 12-speed electronic shifting system, including the Shimano GRX RD-RX717 Di2 rear derailleur and Shimano GRX ST-RX717 Di2 shifters. This setup delivers fast, precise, and reliable shifting in all riding conditions. Paired with a wide-range Shimano CS-M6100-12 10-51T cassette and a 40T narrow-wide chainring, the X-Lab GT8 is ready for steep gravel climbs, fast fire road descents, and long mixed-surface adventures.

A major standout feature is the Branta alloy power meter crankset, which helps riders train smarter, measure output accurately, and maximize performance on every ride. The crankset also includes Apple Find My anti-theft technology, giving this carbon gravel bike an extra layer of security and modern connected convenience. The bike uses a T47 24mm bottom bracket, valued for durability, creak resistance, and serviceability.

For stopping power, the GT8 is equipped with Shimano GRX BR-RX715 hydraulic disc brakes and Shimano SM-CL700 160mm rotors front and rear, offering excellent braking control, modulation, and reliability in wet, dusty, and unpredictable gravel conditions.

Rolling on a Branta C45 gravel carbon wheelset with stainless steel spokes, the X-Lab GT8 balances aerodynamic efficiency with off-road capability. The bike comes fitted with Continental Terra Trail 700x45C tires, providing exceptional grip, comfort, and traction for gravel roads, hardpack, and variable terrain. Topping off the build is a premium Fizik Terra Argo X7 saddle, built for comfort and support on long days in the saddle.

At just 8.78 kg / 19.31 lbs in size M, the X-Lab GT8 is impressively light for a carbon gravel bike with electronic shifting, carbon wheels, hydraulic disc brakes, and a power meter crankset. Available in XS, S, M, L, XL, and XXL, it is an outstanding choice for riders looking for a high-end Shimano GRX Di2 gravel bike, a lightweight full carbon gravel race bike, or a premium all-road machine with advanced performance features.

Why Buy the X-Lab GT8 from Bike Attack?
If you are looking for a fast, modern, and technology-driven gravel bike that climbs efficiently, descends confidently, and stands out with premium features, the X-Lab GT8 is built to exceed expectations. From gravel racing to weekend exploration, this bike is ready for every surface and every mile. Bike Attack professionally assembles the bike for you and handles all warranty service repairs.

Key Features:

• Full Toray T-800 carbon frame and fork
• Shimano GRX Di2 12-speed electronic shifting
• Shimano GRX hydraulic disc brakes
• UDH compatible frame
• Branta alloy power meter crankset
• Apple Find My anti-theft technology
• Branta C45 gravel carbon wheelset
• Continental Terra Trail 700x45C tires
• Fizik Terra Argo X7 saddle
• Weight: 8.78 kg / 19.31 lbs (Size M)