X-LAB GT8 Shimano GRX717 Di2 Afterburner Black Large

X-LAB GT8 Shimano GRX717 Di2 Afterburner — Large

The X-LAB GT8 is a full carbon gravel race bike built around a Toray T-800 frame and fork, Shimano GRX Di2 1x12 electronic drivetrain, and a Branta alloy integrated power meter crankset with Apple Find My anti-theft technology. Designed for fast mixed-surface riding, gravel events, and long-distance adventure routes, the GT8 competes directly with premium platforms like the Trek Checkpoint SL and Specialized Crux while delivering power meter capability and wider tire clearance from the factory. The Large size suits taller riders seeking the same race-ready geometry and component spec.

Key technical highlights include a 10-51T wide-range cassette for confident climbing on steep gravel and loaded rides, Branta C45 carbon wheelset with stainless steel spokes, Continental Terra Trail 700x45c tires, up to 55mm tire clearance, T47 threaded bottom bracket for long-term serviceability, UDH-compatible rear dropout, and integrated in-frame storage with accessory mounting points on the frame and fork. Shimano GRX BR-RX715 hydraulic disc brakes and a Fizik Terra Argo X7 saddle round out the build.

• Toray T-800 full carbon gravel frame and fork
• Shimano GRX RD-RX717 Di2 rear derailleur and ST-RX717 Di2 shifters
• Branta alloy power meter crankset, 40T, with Apple Find My integration
• Branta C45 Gravel carbon wheelset with stainless steel spokes
• Continental Terra Trail 700x45c tires; up to 55mm tire clearance
• Shimano CS-M6100-12 cassette, 10-51T wide-range gearing
• Shimano GRX BR-RX715 hydraulic disc brakes with 160mm rotors front and rear
• T47 threaded bottom bracket and UDH-compatible rear dropout
• Integrated in-frame storage and frame/fork accessory mounts
• Branta carbon stem and gravel carbon handlebar; XDS carbon 27.2mm seatpost
• Claimed weight: 8.78 kg / 19.31 lbs (Size M)