X-LAB RT9 Frameset Shadowbox

Description

The lightest production road frame ever built.


X-LAB RT9

The RT9 redefines what is possible in lightweight performance engineering.

Constructed from Toray T1100 carbon and refined through extensive structural analysis, the frame weighs an astonishing 550 grams while maintaining the stiffness and durability required for elite racing.

The result is a machine built for the purest expression of climbing performance with instant acceleration, unmatched efficiency, and effortless elevation gain.

The RT9 is the lightest production road bike frame in the world. Period.


The 550g Frame to Defy Gravity

When the goal is pure elevation, grams matter. The RT9 begins with a frame engineered to ~550 grams, built to feel weightless on the steepest pitches while staying composed under real-world power.


A Cockpit Built for Switchbacks

Every touchpoint is designed for climbing: a lightweight, responsive integrated cockpit that keeps the front end precise when the road turns vertical and the pace turns personal.


Seamless Integration, Elite Efficiency

From seatpost to tube junctions, RT9’s integration is obsessively refined to complement an all-out climbing machine with cleaner lines, cleaner airflow, and a ride that feels like perpetual poetry in motion.



Geometry 

FrameSizeXSSMLXL
ASeat Tube Length (mm)470495515540565
BTop Tube Length (mm)504523540559579
CHead Tube Length (mm)105118130148171
DSeat Tube Angle (deg)7575747473
EHead Tube Angle (deg)7172737373
FChainstay Length (mm)410410410410410
GWheelbase (mm)9709789829921007
HFork Rake/Offset (mm)4848434343
IBB Drop (mm)7272707070
JStack (mm)505520534553575
KReach (mm)371379387395405
LFront Center (mm)575582583592607
Trail (mm)6763646159
ComponentsSizeXSSMLXL
Stem9090100100120
Handlebar360360380380400
Seat Post300300300300300

Code Product Name Stock Your Price Quantity
FXL9301-0032
X-LAB RT9 Frameset Shadowbox - S
Stock Level:
In Stock
Contact your local dealer for pricing and availability
FXL9301-0033
X-LAB RT9 Frameset Shadowbox - M
Stock Level:
In Stock
Contact your local dealer for pricing and availability
FXL9301-0034
X-LAB RT9 Frameset Shadowbox - L
Stock Level:
In Stock
Contact your local dealer for pricing and availability