X-LAB GT8 Bike 2026Built for wherever the road stops. The X-LAB GT8 is a full-carbon gravel bike engineered to go further and push harder, without asking you to compromise. The carbon frame, fork, seatpost, and semi-integrated cockpit keep the bike lightweight, clean, and capable, with 55mm of tire clearance, to open up a whole new world of riding. A Shimano GRX715 1x Di2 drivetrain handles shifting duties with electronic reliability, and the Branta C45 Gravel carbon wheelset with stainless steel spokes is built to take a beating across any terrain. The Branta alloy power meter crankset - with integrated Apple Find My anti-theft technology - means you're always training with data and your bike is always accounted for. Features Full carbon frame, fork, seatpost, and semi-integrated cockpit for a lightweight, stiff, and cohesive build from front to back Shimano GRX715 1x Di2 electronic drivetrain with a wide-range 10-51T cassette for confident climbing and smooth, precise shifting on any surface Branta C45 Gravel carbon wheelset with stainless steel spokes, engineered in-house as part of X-LAB's exclusive Branta Advantage platform55mm tire clearance for aggressive gravel tires and genuine off-road capability Branta alloy power meter crankset with Apple Find My anti-theft technology integrated training data, and theft protection built directly into the drivetrain In-frame storage and accessory mounting points on both frame and fork for bikepacking and long-distance adventure riding SPECIFICATIONSFrame XDS Carbon Frame, UDH Hanger Fork XDS Carbon Fork, 100x12mm Thru-axle Stem Branta Carbon Stem Handlebar Branta Gravel Carbon Handlebar Seatpost XDS Carbon 27. 2mm Rear Derailleur Shimano GRX715 RD-RX717Shifters Shimano GRX715 ST-RX717Brakes Shimano GRX715 BR-RX715Cassette Shimano CS-M6100-12, 10-51TCrankset Branta Alloy Powermeter Crankset, 40T, Narrow-wide Teeth, 24mm Steel Spindle Bottom Bracket T47 24mm Rotors Shimano SM-CL700, F:160mm R:160mm Chain Shimano CN-M6100Wheelset Branta C45 Gravel Carbon Wheelset, Stainless Steel Spokes Tires Continental Terra Trail 700x45CSaddle Fizik Terra Argo X7Weight8. 78 kg / 19. 35 lbs (Size M)Note: Components are subject to change without notice. METRICINCHX-LAB GT8 2026Size XSSMLXLXXLA: Seat Tube Length (mm)435447471491532577B: Top Tube Length (mm)506525547566585605C: Stack (mm)519540565584607631D: Reach (mm)370379384392399408F: BB Drop (mm)808080808080G: Head Tube Length (mm)80100120140165190H: Head Tube Angle70deg70deg71deg71deg71deg71degI: Seat Tube Angle76deg76deg74deg74deg73deg73degJ: Standover (mm)715730755773807838K: Chainstay Length (mm)435435435435435435L: Wheelbase (mm)102010321031104610611078Front Center (mm)598610609624638655Fork Rake Offset (mm)555550505050Trail (mm)757272797076Stem (mm)70708090100100Handlebar (mm)370/430370/430390/450390/450410/470410/470Crankset (mm)165165170170172. 5172. 5Seat Post (mm)300300350350350350X-LAB GT8 2026Size XSSMLXLXXLA: Seat Tube Length (in)17. 117. 618. 519. 320. 922. 7B: Top Tube Length (in)19. 920. 721. 522. 323. 023. 8C: Stack (in)20. 421. 322. 223. 023. 924. 8D: Reach (in)14. 614. 915. 115. 415. 716. 1F: BB Drop (in)3. 13. 13. 13. 13. 13. 1G: Head Tube Length (in)3. 13. 94. 75. 56. 57. 5H: Head Tube Angle70deg70deg71deg71deg71deg71degI: Seat Tube Angle76deg76deg74deg74deg73deg73degJ: Standover (in)28. 128. 729. 730. 431. 833. 0K: Chainstay Length (in)17. 117. 117. 117. 117. 117. 1L: Wheelbase (in)40. 240. 640. 641. 241. 842. 4Front Center (in)23. 524. 024. 024. 625. 125. 8Fork Rake Offset (in)2. 22. 22. 02. 02. 02. 0Trail (in)3. 02. 82. 83. 12. 83. 0Stem (in)2. 82. 83. 13. 53. 93. 9Handlebar (in)14. 6/16. 914. 6/16. 915. 4/17. 715. 4/17. 716. 1/18. 516. 1/18. 5Crankset (in)6. 56. 56. 76. 76. 86. 8Seat Post (in)11. 811. 813. 813. 813. 813. 8 | Xds | X-Lab Gt8 Bike | Slipstream | M