Argon 18 Sum Pro geometry
Argon 18 Sum Pro (carbon road) has 6 published frame sizes. Stack 471–592 mm; reach 375–414 mm. Sources, weights and tyre clearance where available.
Road · carbon · Model year not specified
Measurements
Lengths in mm · Angles in degrees Select + beneath a size to compare
| Frame size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack mm | 471 | 493 | 516 | 540 | 565 | 592 |
| Reach mm | 375 | 382 | 389 | 397 | 405 | 414 |
| Effective top tube mm | — | — | — | — | — | — |
| Seat tube length mm | 395 | 425 | 460 | 505 | 550 | 595 |
| Head tube length mm | 69 | 85 | 101 | 126 | 152 | 180 |
| Head tube angle ° | 71.2 | 72.1 | 72.7 | 72.7 | 72.7 | 73 |
| Seat tube angle ° | 75 | 74.5 | 74 | 73.5 | 73 | 72.5 |
| Chainstay length mm | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase mm | 967 | 972 | 975 | 990 | 1006 | 1020 |
| Bottom bracket drop mm | 69 | 73 | 77 | 77 | 77 | 77 |
| Bottom bracket height mm | — | — | — | — | — | — |
| Fork length mm | — | — | — | — | — | — |
| Fork offset mm | — | — | — | — | — | — |
| Trail mm | — | — | — | — | — | — |
| Standover height mm | 676 | 700 | 727 | 766 | 804 | 841 |
| Front centre mm | — | — | — | — | — | — |
— Not published in the collected chart. Size labels follow the manufacturer.
Frame and fork weight
- Frame: 850 g · size M
Argon 18 Japan manufacturer claim for the Sum-family launch generation: painted size M frame. Frame hardware inclusion not specified. Claim is not a measured weight for current production or every size.
Tyre clearance
Not verified for this frame.
Sources
Reviewed 2026-10-01
Measurement and frame notes
- Baseline/0 mm 3D stack and reach are used where the maker publishes multiple 3D front-end settings; other 3D settings are not separate frame sizes.
- Published frame weight: 850 g for a painted size M frame (Argon 18 launch-era claim). Hardware inclusion and current production weight are not specified.