XDS X-LAB RT9 Frameset550 Grams. A Climbers Paradise Ready. Set. Climb! The RT9 is a pure climbing frameset, Toray T1100 and M40X carbon in a layup refined through extensive structural analysis, reaching an astonishing 550 grams without giving up the stiffness a hard effort demands. That carbon pairing puts T1100's strength-to-weight at the foundation, then adds M40X's high-modulus stiffness where it matters most for sprint acceleration and steep-pitch response. Tire clearance runs up to 30c wide. The result is a machine built for the purest expression of climbing performance with instant acceleration, unmatched efficiency, and effortless elevation gains. The RT9 frameset claimed weight makes it the lightest production road bike frame in the world. Designed for riders who want elite stiffness, low weight, responsive handling, and a frameset ready for the highest-performance climbing builds. Features Toray T-1100 + M40X carbon frame claimed 1. 14 kg in size M without headset Toray T-1100 carbon fork with a 100x12mm thru-axle UDH compatible replacement derailleur hangers are easy to find Electronic groupset compatible works with most wired and wireless electronic groupsets from all major drivetrain brands Clearance for up to 30mm tires room for a smoother ride on rough pavement XDS carbon seatpost included 27. 2mm diameter SPECIFICATIONSFrame Material XDS Carbon Frame, Toray T-1100 + M40X, UDH Compatible Fork XDS Carbon Fork, Toray T-1100, 100x12mm Thru-Axle Wheel Size700C compatible wheels Max Tire Clearance30mm Headset Not Included Headtube Standard N/ABottom Bracket BSA 29mm Seatpost Diameter27. 2mm (XDS Carbon Seatpost Included)Seat Clamp XDS Seat Clamp Rear Axle Thru Axle (included)Cable Routing Wired/Wireless (compatible with most wired and wireless electronic groupsets from major brands)Accessory Mounts N/AIntended Use Road Weight1. 14 kg / 2. 51 lbs (Size M, w/o Headset)Note: Components are subject to change without notice. METRICINCHXDS X-LAB RT9 Geometry - Metric Size XSSMLA: Seat Tube430460480500B: Effective Top Tube498520540563C: Stack510525543567D: Reach362372384396E: Head Tube Angle70. 5 deg71. 7 deg73 deg73. 5 degF: Head Tube Length110120137157G: Seat Tube Angle75 deg74. 2 deg74 deg73. 5 degH: Chainstay Length410410410410I: BB Drop74747272J: Wheelbase972. 5977978992Rider Height Size XSSMLRider Height4'10"-5'2"5'2"-5'6"5'6"-5'9"5'9"-6'0"XDS X-LAB RT9 Geometry - Inch Size XSSMLA: Seat Tube16. 918. 118. 919. 7B: Effective Top Tube19. 620. 521. 322. 2C: Stack20. 120. 721. 422. 3D: Reach14. 314. 615. 115. 6E: Head Tube Angle70. 5 deg71. 7 deg73 deg73. 5 degF: Head Tube Length4. 34. 75. 46. 2G: Seat Tube Angle75 deg74. 2 deg74 deg73. 5 degH: Chainstay Length16. 116. 116. 116. 1I: BB Drop2. 92. 92. 82. 8J: Wheelbase38. 338. 538. 539. 1 | Xds | X-Lab Rt9 Frameset | Shadowbox | S