ER:ONE ULTEGRA Di2
Regular price
$6,899.00 AUD
Sale price
$6,899.00 AUD
Regular price
Unit price
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Estimated Shipping:Jun 11 - Jun 15
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
Key Specifications
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FRAME
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BRAKES
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DRIVETRAIN
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 |
Geometry & Size Guide
ER:ONE ULTEGRA Di2
Blog posts
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