Description:
Argon 18 Nitrogen Pro Shimano Dura-Ace Di2 — Argon 18's Fastest Aero Road Race Platform
The Argon 18 Nitrogen Pro is built for riders who want a pro-level aero road bike that does not compromise on fit, ride quality, or real-world handling. Developed around aerodynamic frame design, modern race geometry, flexible rider fit, and world-class components, the Nitrogen Pro is designed to deliver speed, lightness, fit, and ride optimization in one integrated package.
Key platform features include a flow-optimized headtube, ATTEN CHB-01 Aero Handlebar, wider and deeper fork design, ATTEN x Scope Artech 6.A+ wheels, integrated aero bottle cages on select builds, oversized bottom bracket area, horizontal dropped seat stays, aerodynamic seatpost, Universal Derailleur Hanger compatibility, Pro Level Layup, Road Race Geometry, and the Argon Fit System.
Why buy this model?
The Shimano Dura-Ace Di2 build is the top Shimano option for riders who prefer the precision, braking feel, and race heritage of Dura-Ace. It pairs Dura-Ace R9250/R9270 electronic shifting with the same Nitrogen Pro aero frame, ATTEN cockpit, CeramicSpeed bearing spec, and ATTEN x Scope Artech 6.A+ wheels.
- Pro Level Layup carbon aero road frame
- ATTEN CHB-01 Aero Handlebar for front-end aerodynamic gains
- ATTEN x Scope Artech 6.A+ wheels optimized around the Nitrogen Pro frame
- Vittoria Corsa Pro TLR 30c tires
- 32c / 34mm tire clearance
- Race geometry with XXS through XL sizing
- CeramicSpeed headset and T47 bottom bracket spec
- Aurora Charcoal finish
Which Nitrogen Pro should you buy?
| Build | Best For | Why Choose It |
|---|---|---|
| SRAM RED AXS | Riders who want the flagship SRAM build and the lightest, most premium wireless drivetrain package. | Choose RED AXS for SRAM's top road group, integrated power measurement, premium wireless shifting, ATTEN x Scope Artech 6.A+ wheels, and the most complete Nitrogen Pro package. |
| Shimano Dura-Ace Di2 | Shimano loyalists who want the highest-end Di2 race build. | Choose Dura-Ace Di2 for elite Shimano shifting/braking, Dura-Ace drivetrain components, CeramicSpeed bearing spec, and the same fully optimized Nitrogen Pro aero platform. |
| Shimano Ultegra Di2 | Riders who want Pro-level aerodynamics with a lower entry price than RED or Dura-Ace. | Choose Ultegra Di2 for high-performance Shimano electronic shifting, the same Nitrogen Pro frame, ATTEN cockpit, and Artech 6.A+ wheels at the best value in the Pro lineup. |
Specifications
| Component Group | Component | Specification |
|---|---|---|
| Frameset | Frame | Nitrogen Pro |
| Frameset | Fork | Nitrogen Pro |
| Frameset | Headset | IST3 - CeramicSpeed SLT Bearings |
| Frameset | Integrated Cables | Yes |
| Wheels | Wheels | ATTEN x Scope Artech 6.A+ |
| Wheels | Tires | Vittoria Corsa Pro TLR 30c |
| Wheels | Tire Clearance | 32c (34mm) |
| Group | Bottom Bracket | CeramicSpeed T47 Coated |
| Group | Front Derailleur | Shimano Dura-Ace Di2 R9250 |
| Group | Rear Derailleur | Shimano Dura-Ace Di2 R9250 |
| Group | Crankset | Shimano Dura-Ace R9200 52/36 |
| Group | Chain | Shimano Dura-Ace CN-M9100 |
| Group | Cassette | Shimano Dura-Ace CS-R9200 11-30 |
| Brakes | Rotors | Shimano Dura-Ace RT-CL900 / F:160mm R:140mm |
| Brakes | Shifters | Shimano Dura-Ace Di2 R9270 |
| Other | Handlebar | ATTEN CHB-01 Aero Handlebar |
| Other | Bar Tape | Ciclovation LEATHER TOUCH Tornado Gloss |
| Other | Saddle | Repente Quasar CR 2.0 |
| Other | Seatpost | Argon 18 Nitrogen Pro |
| Included | Toolkit | No |
Geometry
| Measurement | Unit | XXS 44-46 |
XS 47-50 |
S 51-53 |
M 54-56 |
L 57-59 |
XL 60-62 |
|
|---|---|---|---|---|---|---|---|---|
| A | Seat tube Height | cm | 39.5 | 42.5 | 46.0 | 50.5 | 55.0 | 59.5 |
| B | Seat tube angle | deg | 75.0 | 74.5 | 74.0 | 73.5 | 73.0 | 72.5 |
| C | Head Tube Angle | deg | 71.2 | 72.1 | 72.7 | 72.7 | 72.7 | 73.0 |
| D | Top tube length | cm | 50.2 | 51.9 | 53.7 | 55.7 | 57.8 | 60.1 |
| E | Chain stay length | cm | 41.0 | 41.0 | 41.0 | 41.0 | 41.0 | 41.0 |
| F | Wheelbase | cm | 96.7 | 97.2 | 97.5 | 99.0 | 100.6 | 102.0 |
| G | BB Drop | cm | 7.1 | 7.5 | 7.9 | 7.9 | 7.9 | 7.9 |
| H1 | Head Tube Length S | cm | 8.1 | 9.7 | 11.3 | 13.8 | 16.5 | 19.2 |
| I | Stand Over Height | cm | 68.2 | 70.6 | 73.4 | 77.2 | 81.0 | 84.8 |
| L | Fork Length (Axle-to-crown) | cm | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 | 37.6 |
| R | Fork Rake | cm | 4.9 | 4.9 | 4.5 | 4.5 | 4.5 | 4.5 |
Fit: Stack and Reach
| Measurement | Unit | XXS 44-46 |
XS 47-50 |
S 51-53 |
M 54-56 |
L 57-59 |
XL 60-62 |
|
|---|---|---|---|---|---|---|---|---|
| J | Stack | cm | 48.6 | 50.8 | 53.1 | 55.5 | 58.0 | 60.7 |
| K | Reach | cm | 37.0 | 37.7 | 38.4 | 39.2 | 40.0 | 40.9 |
| Saddle Height Min | cm | 56.5 | 59.5 | 63.0 | 67.5 | 72.0 | 76.5 | |
| Saddle Height Max | cm | 71.5 | 74.5 | 78.0 | 82.5 | 87.0 | 91.5 |
Size-Specific Contact Points
| Measurement | Unit | XXS 44-46 |
XS 47-50 |
S 51-53 |
M 54-56 |
L 57-59 |
XL 60-62 |
|
|---|---|---|---|---|---|---|---|---|
| Crank Length | mm | 165 | 165 | 170 | 170 | 172.5 | 172.5 | |
| Stem Length | mm | 80 | 90 | 90 | 100 | 110 | 120 | |
| Handlebar Width | mm | 360 | 360 | 360 | 380 | 380 | 380 |
FAQ
What makes the Nitrogen Pro different from the regular Nitrogen?
The Nitrogen Pro is Argon 18's top aero road platform, using Pro Level Layup, ATTEN CHB-01 aero cockpit integration, ATTEN x Scope Artech 6.A+ wheels, CeramicSpeed bearing spec, integrated bottle cage optimization, and race-focused geometry.
Is the Nitrogen Pro an aero bike or a climbing bike?
It is built as an aero race bike that still prioritizes low weight, fit, and ride quality. Argon 18 positions the Nitrogen Pro as a platform that brings together speed, lightness, fit, and ride optimization rather than focusing on only one performance metric.
What tire size does the Nitrogen Pro fit?
The source specification lists 32c tire clearance with a 34mm measured clearance reference. The complete builds use Vittoria Corsa Pro TLR 30c tires.
Does the Nitrogen Pro use an integrated cockpit?
Yes. It uses the ATTEN CHB-01 Aero Handlebar, designed around front-end aerodynamic gains, rider ergonomics, lightweight construction, and integrated accessory mounting.
What wheels come on the Nitrogen Pro?
The complete Nitrogen Pro builds use the ATTEN x Scope Artech 6.A+ wheelset, co-developed with Scope and optimized around the Nitrogen Pro frame and 30c tires.
What color is included in this import?
This Shopify import uses Aurora Charcoal for all Nitrogen Pro builds, matching the inventory table provided.
Which size Nitrogen Pro should I choose?
Use the geometry and fit table as a guide, and confirm with a professional fit whenever possible. Argon 18 lists sizes XXS through XL with rider ranges from 44-46 through 60-62.
Search-friendly summary: Argon 18 Nitrogen Pro Shimano Dura-Ace Di2 is a pro-level aero road race bike in Aurora Charcoal with ATTEN x Scope Artech 6.A+ wheels, ATTEN CHB-01 aero cockpit, CeramicSpeed bearing spec, Vittoria Corsa Pro TLR 30c tires, 32c clearance, and XXS through XL sizing.
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