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1956615 / 54293699887450

Product Details

Argon 18 Nitrogen Pro ultegra Di2 Road Bike 2026

The Argon 18 Nitrogen Pro Ultegra Di2 Road Bike is the fastest road bike ever produced by Argon 18, created as a complete system to deliver maximum speed, fit, and ride quality. Built for real-world conditions, it combines aerodynamic frame shaping, modern geometry, and a rider-focused fit with premium components to produce a high-performance machine that is fast, light, and responsive while retaining Argon 18’s renowned ride comfort.

Nitrogen Pro Frame and Design

The Nitrogen Pro is developed with aerodynamics and rider efficiency at its core. Its geometry provides a race-ready position without compromising comfort for long days in the saddle. Every aspect of the frame has been optimised to balance speed, control, and performance.

Argon 18 Nitrogen Pro Performance

All Nitrogen models include specially designed bottle cages inspired by automotive airflow concepts, further improving aerodynamic efficiency and integration.

Argon 18 ATTEN Technology

Argon 18’s ATTEN technology division leads innovation across the Nitrogen platform. Each ATTEN component is designed with a performance-driven purpose, addressing specific needs and pushing the boundaries of cycling technology.

Argon 18 Nitrogen Pro ATTEN Aero Handlebar

The custom ATTEN CHB-01 Aero Handlebar enhances aerodynamics at the leading edge while optimising rider positioning. As part of Argon 18’s system-based approach, it ensures the frame and cockpit function together to minimise drag and maximise speed.

Features
  • Wheels: ATTEN x Scope Artech 6.A+
  • Tyres: Vittoria Corsa Pro TLR 30c
  • Shifters: Ultegra Di2 R8150
  • Front Derailleur: Ultegra Di2 FD-R8150
  • Rear Derailleur: Ultegra Di2 RD-R8150
  • Crankset: Ultegra FC-R8100 52/36
  • Chain: Ultegra CN-M8100
  • Cassette: Ultegra CS-R8100 11/30
  • Bottom Bracket: CeramicSpeed T47 24mm Coated
  • Handlebar: ATTEN CHB-01 Aero Handlebar
  • XXS: Handlebar 360mm, Stem 80mm, Crank 165mm
  • XS: Handlebar 360mm, Stem 90mm, Crank 165mm
  • S: Handlebar 360mm, Stem 90mm, Crank 170mm
  • M: Handlebar 380mm, Stem 100mm, Crank 170mm
  • L: Handlebar 380mm, Stem 110mm, Crank 172.5mm
  • XL: Handlebar 380mm, Stem 120mm, Crank 172.5mm
  • Headset: CeramicSpeed SLT Bearings
  • Brakes: BR-R8170
  • Rotors: RT-CL800 / Front: 160mm Rear: 140mm
  • Bar Tape: Ciclovation Leather Touch
  • Saddle: Repente Quasar CR 2.0
  • Seatpost: Argon 18 TDS-C Nitrogen Pro
Specifications
Model
Nitrogen Pro Ultegra Di2
Bottom Bracket [Maker]
CeramicSpeed
Bottom Bracket Standard
T47
Brakes [Kind]
Hydraulic Disc
Brakes [Maker]
Shimano
Brakes [Model]
Ultegra BR-R8170
Cassette [Gearing]
11-30
Cassette [Maker]
Shimano
Cassette [Model]
Ultegra CS-R8100
Chain [Maker]
Shimano
Chain [Model]
Ultegra CN-M8100
Chainring [Gearing]
52–36
Crank [Maker]
Shimano
Crank [Model]
Ultegra FC-R8100
Discipline Compatibility
Road
E-Bike
No
Family
Nitrogen
FD [Maker]
Shimano
FD [Model]
Ultegra Di2 FD-R8150
Fenders Mounts
No
Fork [Axle Type]
12x100mm Thru-Axle
Fork [Brake Type]
Disc
Fork [Maker]
Argon 18
Fork [Material]
Carbon
Fork [Model]
Nitrogen Pro
Fork [Rake]
49 mm
Fork [Wheel Size]
700c
Frame [Material]
Carbon
Frame [Tire Clearance]
32c mm
Frameset
No
Gearing [Configuration]
2x
Gearing [Kind]
Conventional
Gender
Unisex
Handlebar [Kind]
Drop
Handlebar [Maker]
atten
Handlebar [Shape]
Drop bar
Headset [Maker]
CeramicSpeed
Rack Mounts
No
RD [Maker]
Shimano
RD [Model]
Ultegra Di2 RD-R8150
Saddle [Maker]
repente
Seatpost [Kind]
Rigid
Seatpost [Maker]
Argon 18
Seatpost [Material]
Aluminium
Seatpost [Offset]
0 mm
Shifters [Maker]
Shimano
Shifters [Model]
Ultegra Di2 R8150
Shifting
Electronic
Sub Family
Nitrogen Pro
Suspension Configuration
Rigid
Tires [Maker]
Vittoria
Tires [Width]
30 mm
Wheels [Configuration]
Front+Rear
Wheels [Kinds]
Tubeless Ready
Wheelset [Inner Width]
21 mm
Wheelset [Maker]
Scope
Wheelset [Material]
Carbon
Wheelset [Model]
ATTEN x Scope Artech 6.A+
Product code
1956615 / 54293699887450
Size Guide
XXSXSSMLXL
Seat Tube (ctr-top)418453492530565595
Seat Tube (ctr-ctr)------
Effective Top Tube500519538556575595
Actual Top Tube ------
Seat Angle (°)75.574.57473.57372.5
Head Tube Angle (°)717272.772.772.773
Head Tube Length7681108140163188
Fork Rake------
Chainstay Length406406406408410410
Wheelbase96096297198710031015
Stack481489517547569594
Reach375383389394401408
Argon 18 Gallium CS Road Bike RIM 2020 Size guide

*All measurements in mm unless otherwise stated.

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Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.

Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.

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