Argon 18 Equation
375B.3D.1
This bike is available through the Cycle to Work Scheme
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- Questions on size or spec? Call 01625 403803 or visit us at 48a London Road, Alderley Edge
- Sized properly: book a bike fit in our Alderley Edge studio
- Not in the shop? Supplier stock reaches us in 4–5 days, then we post it or it's ready to collect
- 30-day returns (custom builds excluded)
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The Equation is Argon 18's formula for fun: ultimate comfort, reliable components and intuitive handling, with maximum value from a performance-minded carbon frame.
Endurance geometry gives a stable, relaxed riding position, and the Topological Compliance System damps road vibration so long summer rides feel fun rather than punishing.
Highlights
- Cyclosportif carbon layup, derived from Argon 18's Pro models
- Endurance geometry for a stable, relaxed position
- SRS integrated cable routing
- 32c tyre clearance
- Mudguard mounts for all-weather riding
- Shimano 105 Di2 and 105 builds
Sizes and fit
Available in XXS (44-46cm), XS (47-50cm), S (51-53cm), M (54-56cm), L (57-59cm) and XL (60-62cm). Each size has its own geometry under the Argon Fit System.
Colours
Podium Champagne and Matte Charcoal.
Frameset
- Frame: Equation
- Fork: Equation
- Headset: FSA NO.69 SRS System
Wheels and tyres
- Tyres: Vittoria Zaffiro Pro 700x30c
- Tyre clearance: 32c (34mm)
Drivetrain
- Chain: Shimano 105 CN-M7100
- Cassette: Shimano 105 CS-R7100 11-34
Cockpit and contact points
- Handlebar: FSA Vero Compact
Shimano 105 Di2 build
- Wheels: ATTEN L42 wheelset
- Bottom bracket: Shimano BB-RS500
- Front derailleur: Shimano 105 Di2 R7150
- Rear derailleur: Shimano 105 Di2 R7150
- Crankset: Shimano 105 FC-R7100 50/34
- Brakes: Shimano 105 Di2 R7170
- Rotors: Shimano RT-CL700 / F:160mm R:160mm
- Shifters: Shimano 105 Di2 R7170
- Stem: FSA Omega Pro ST-167
- Bar tape: Ciclovation LEATHER TOUCH Tornado Gloss
- Saddle: Repente Quasar S
- Seatpost: Argon 18 TDS-C
Shimano 105 build
- Wheels: DT Swiss E 1800 Spline 32mm
- Bottom bracket: Shimano BB-RS500-PB
- Front derailleur: Shimano 105 R7100
- Rear derailleur: Shimano 105 R7100
- Crankset: Shimano R7100 50/34
- Brakes: Shimano 105 R7120 hydraulic disc
- Rotors: Shimano SM-RT86, 6-bolt / F:160mm R:160mm
- Shifters: Shimano 105 R7120
- Stem: FSA OS-167 Omega Pro
- Bar tape: Prologo Plaintouch black
- Saddle: Prologo Akero
- Seatpost: FSA Gossamer SB20 27.2mm
| Size | XXS (44-46) | XS (47-50) | S (51-53) | M (54-56) | L (57-59) | XL (60-62) |
|---|---|---|---|---|---|---|
| Stack (mm) | 518 | 537 | 558 | 578 | 600 | 623 |
| Reach (mm) | 359 | 369 | 379 | 388 | 397 | 407 |
| Seat tube length (mm) | 420 | 450 | 485 | 520 | 555 | 590 |
| Top tube (effective) (mm) | 496 | 516 | 537 | 558 | 580 | 604 |
| Head tube length (mm) | 84 | 101 | 120 | 141 | 166 | 189 |
| Head tube angle (°) | 70.3 | 71.3 | 72 | 72 | 72 | 72.5 |
| Seat tube angle (°) | 75.5 | 74.9 | 74.3 | 73.7 | 73.1 | 72.5 |
| Chainstay length (mm) | 417 | 417 | 420 | 420 | 420 | 420 |
| BB drop (mm) | 80 | 80 | 78 | 78 | 75 | 75 |
| Wheelbase (mm) | 981 | 989 | 997 | 1013 | 1030 | 1043 |
| Fork length (mm) | 387 | 387 | 387 | 387 | 387 | 387 |
| Fork offset (mm) | 52 | 52 | 47 | 47 | 47 | 47 |
| Trail (mm) | 68 | 61 | 62 | 62 | 62 | 59 |
| Standover (mm) | 673 | 700 | 734 | 764 | 797 | 827 |
| Head tube length (25mm 3D spacer) (mm) | 109 | 126 | 145 | 166 | 191 | 214 |
| Stack (25mm 3D spacer) (mm) | 541 | 561 | 581 | 602 | 623 | 646 |
| Reach (25mm 3D spacer) (mm) | 351 | 361 | 372 | 381 | 390 | 400 |
Measurements from Argon 18's published geometry, converted from cm to mm. Stack, reach and head tube are shown with no 3D headset spacer; the extra rows show the taller 3D spacer options.
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