The X-LAB RT9 is built around one goal: delivering exceptional lightweight performance for riders who want to climb faster.
Constructed from Toray T1100 carbon and refined through extensive structural analysis, the RT9 frame weighs just 550 grams, while maintaining the stiffness and durability needed for high-level racing.
Its lightweight construction translates into quick acceleration, efficient power transfer, and less weight to carry uphill, making it a bike designed to come alive when the road starts climbing.
Built for riders chasing elevation, speed, and pure road performance, the RT9 represents X-LAB’s approach to creating an exceptionally light race machine.
Lightweight by design. Built to climb.
Branta C50 ULR carbon wheelset with carbon spokes | 1,230 g
Branta carbon crankset with integrated power meter + Apple Find My anti-theft technology
Shimano Dura-Ace groupset
XDS carbon frameset with Toray T1100, Full bike 6.2kg
| Frame | XDS Carbon Frame, Toray T-1100 + M40X, UDH Compatible |
|---|---|
| Fork | XDS Carbon Fork, Toray T-1100, 100x12mm Thru-axle |
| Handlebar / Stem | Branta Carbon Integrated |
| Seatpost | XDS Carbon Seatpost, 27.2mm |
| Rear Derailleur | Shimano Dura-Ace RD-R9250 Di2 |
| Front Derailleur | Shimano Dura-Ace FD-R9250 Di2 |
| Shifters | Shimano Dura-Ace ST-R9270 Di2 |
| Brakes | Shimano Dura-Ace BR-R9270 |
| Cassette | Shimano Dura-Ace CS-R9200, 11-34T |
| Crankset | Branta Carbon Power Meter Crankset, 52-36T, 29mm Alloy Spindle, Apple Find My Anti-Theft Technology |
| Bottom Bracket | BSA 29mm |
| Rotors | Shimano SM-MT900, Front: 160mm / Rear: 140mm |
| Chain | Shimano CN-M9100 |
| Wheelset | Branta C50 ULR, Carbon Rims & Spokes, Ceramic Bearings |
| Tires | Michelin Pro 5 700x28C Max Tire Clearance: 30C |
| Saddle | Selle Italia SLR Boost, Carbon Rails |
| Weight | 6.20 kg / 13.64 lbs (Size L) |
| Size Options | XS / S / M / L |

| Basic Geometry | XS | S | M | L |
|---|---|---|---|---|
| A — Seat Tube Length | 430mm | 460mm | 480mm | 500mm |
| B — Top Tube Length | 498mm | 520mm | 540mm | 563mm |
| C — Head Tube Length | 110mm | 120mm | 137mm | 157mm |
| D — Seat Tube Angle | 75° | 74.2° | 74° | 73.5° |
| E — Head Tube Angle | 70.5° | 71.7° | 73° | 73.5° |
| F — Chainstay | 410mm | 410mm | 410mm | 410mm |
| G — Wheelbase | 972.5mm | 977mm | 978mm | 992mm |
| H — Bottom Bracket Drop | 74mm | 74mm | 72mm | 72mm |
| I — Stack | 510mm | 525mm | 543mm | 567mm |
| J — Reach | 362mm | 372mm | 384mm | 396mm |
| K — Front Center | 574mm | 578mm | 578mm | 592mm |
| O — Stand Over | 704mm | 728mm | 750mm | 769mm |
| Component Geometry | XS | S | M | L |
|---|---|---|---|---|
| Fork Rake / Offset | 50mm | 50mm | 44mm | 44mm |
| Trail | 68mm | 61mm | 59mm | 56mm |
| Handlebar | 360mm | 360mm | 380mm | 400mm |
| Stem | 80mm | 100mm | 100mm | 120mm |
| Crankset | 160mm | 160mm | 165mm | 165mm |
| Seat Post | 300mm | 300mm | 350mm | 350mm |
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