ER:ONE - Aero/Racing

The ER:ONE road frame represents a step forward in structural engineering. To achieve the combined goals of low weight, high stiffness, and reduced aerodynamic drag, every stage of development demanded precision. Each carbon ply is strategically oriented, resin ratios are optimized for strength-to-weight efficiency, and tube profiles are refined through repeated simulation and testing. From layup design to functional stress analysis, every parameter is verified and re-evaluated, ensuring a frame that balances efficiency, durability, and speed under real-world racing conditions.

Key Features

Aerodynamic Design
Aerodynamic Design
The fork features a more aerodynamic design, boosting overall performance and efficiency.
Advanced Materials
Advanced Materials
Built with premium Toray T1100 and M56 high-grade carbon fibers, the frame has exceptional stiffness and responsiveness.
Ultra-Light Integrated Handlebar
Ultra-Light Integrated Handlebar
Engineered for exceptional stiffness and precision handling — giving you total control in every corner.

Key Specifications

FRAME
Size Options
XS/430, SM/460, MD/490, LG/520, XL/550, 2X/584
Frameset
T1100 & M65 Modulus Carbon, Monolith One PIece Construction (840g)
Fork
NARROW option for lighter weight & improved handling (-25g) or WIDE option fork for optimized aerodynamics
BRAKES
Front Brake
Shimano BR-R8170
Rear Brake
Shimano BR-R8170
Brake Rotors
RT-CL800 (160mm Front/140mm Rear)
DRIVETRAIN
Shift Levers
Shimano ST-R8170
Front Derailleur
Shimano FD-R8150
Shimano 105 Di2: Shimano BR-R7170
Shimano Ultegra Di2: Shimano BR-R8170
Rear Derailleur
Shimano RD-R8150
Cassette
Shimano CS-R8101-12 (11/34T)
Chain
Shimano CN-M8100
Crankset/Chainrings
Shimano FC-R8100 165/170mm length options & 50/34 or 52/36 chainrings
Bottom Bracket
QuickPro/SSpade Stainless Steel T47/68mm

Size & Fit

Ref Specification XS / 430 S / 460 M / 490 L / 520 XL / 550 XXL / 584
A Frame Size / Seat Tube Length (mm) 430 460 490 520 550 584
B Effective Top Tube Length (mm) 515 525 540 558 575 596
C Seat Tube Angle (°) 75.0 74.5 74.0 73.5 73.5 73.0
D Head Tube Angle (°) 70.0 71.0 72.0 73.0 73.0 73.5
E Head Tube Length (mm) 105 118 132 148 165 185
F Chainstay Length (mm) 408 408 408 408 408 408
G Wheelbase (mm) 985 985 987 991 1008 1019
H Fork Offset / Rake (mm) 45 45 45 45 45 45
I Bottom Bracket Drop (mm) 70 70 70 70 70 70
J Fork Length (mm) 373 373 373 373 373 373
K Standover Height (mm) 746 762 779 797 813 846
Stack-to-Reach Ratio (STR) 1.32 1.36 1.39 1.40 1.40 1.42
Reach (mm) 380 381 386 393 406 415
Stack (mm) 505 521 538 556 572 593

 

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