X-LAB RT9 DURA-ACE DI2

The physics-defying apex of racing performance. If you live for speed, chase vertical elevation, or demand the absolute pinnacle of modern carbon engineering, the X-Lab RT9 is a revelation. At Espresso Bicycle Repairs, our master mechanics are captivated by this machine's record-breaking chassis. Tipping the scales at an astonishing 13.64 lbs (6.20 kg) for a complete Size L, the RT9 is a WorldTour-level elite racer. By fusing a bleeding-edge Toray carbon frameset with Shimano’s flagship Dura-Ace Di2 electronic group and an integrated power meter, this superbike transforms every watt of your energy into pure forward velocity.

Why It Passes the Mechanic's Test:

• Toray T-1100 & M40X Carbon Masterpiece: The frame and fork utilize an ultra-premium blend of Toray T-1100 and M40X carbon fiber. This advanced composite engineering achieves phenomenal lateral stiffness for explosive sprints while keeping the chassis incredibly lightweight.

• Shimano Dura-Ace Di2 2x12 Electronic Drivetrain: The absolute gold standard of professional racing. Wireless cockpit shifters communicate instantly with the semi-wireless front and rear derailleurs, delivering lightning-fast, perfectly synchronized gear changes even under maximum climbing loads.

• Branta C50 ULR Carbon Wheelset with Ceramic Bearings: A masterclass in wheel dynamics. These 50mm deep-section aerodynamic rims feature carbon spokes for ultimate stiffness-to-weight performance, spinning flawlessly on frictionless ceramic bearings to save you crucial watts at high speeds.

• Branta Integrated Power Meter & Anti-Theft Tech: Dial in your training with flawless precision. The premium carbon crankset features a built-in power meter spinning on a stout 29mm alloy spindle. For added peace of mind, the crankset integrates Apple Find My tracking technology directly into its architecture.

• Sleek Integrated Cockpit & Premium Contacts: Zero exposed cables. The Branta carbon integrated handlebar and stem routing keeps the front end completely clean and aerodynamically optimized, beautifully finished with a carbon-railed Selle Italia SLR Boost saddle.

• Future-Proof UDH & 30C Tire Clearance: Built with the modern Universal Derailleur Hanger (UDH)standard, making replacement hangers easily accessible worldwide. The frame comfortably clears up to 30C racing tires for enhanced compliance on rough tarmac.

Quick Specs:

• Frameset: XDS Carbon Toray T-1100 + M40X (UDH Compatible)

• Drivetrain: Shimano Dura-Ace R9250 Di2 24-Speed Electronic

• Gearing: 52-36T Branta Carbon Crankset | 11-34T Dura-Ace Cassette

• Wheelset: Branta C50 ULR Carbon Rim & Carbon Spokes w/ Ceramic Bearings

• Braking: Shimano Dura-Ace Hydraulic Disc (160mm Front / 140mm Rear SM-MT900 Rotors)

• Tires: Michelin Pro 5 700x28C (Max Clearance: 30C)

• Cockpit: Branta Carbon Integrated Bar/Stem & XDS Carbon 27.2mm Seatpost

• Total Weight: An incredible 6.20 kg / 13.64 lbs (Size L)