Argon 18 Sum Pro Frameset
This bike is available through the Cycle to Work Scheme
Unsure of your size?
Book a sizing appointment in our bike fit studio and get the right fit.
Build it your way. The Sum Pro frameset is the foundation of Argon 18's lightest, fastest road platform — wind-tunnel tested to match the aero performance of the fastest World Tour bikes while weighing significantly less.
Key features
- Pro Level Layup carbon
- Hourglass-shaped headtube and draft-deflecting fork blades
- CFD-optimised tube profiles
- D-shaped seatpost with integrated clamp
- 3D System for a wide fit window without compromising steerer stiffness
- Topological Compliance System (TCS)
- Argon Fit System — size-specific geometry
Frame
| Layup | Pro Level Layup carbon |
|---|---|
| Fork | Carbon, draft-deflecting blades |
| Seatpost | D-shaped with integrated clamp |
| Geometry | Road Race Geometry |
Builds
- Frameset — £2,800
All sizes: XXS (44-46), XS (47-50), S (51-53), M (54-56), L (57-59), XL (60-62).
Frameset contents: Argon 18 do not publish a full frameset inclusions list on their GB site. Please confirm exact package contents with us before ordering.
Sizes and fit
Available in frame sizes XXS (44-46), XS (47-50), S (51-53), M (54-56), L (57-59) and XL (60-62). Size-specific geometry comes from the Argon Fit System, and the 3D System gives a wide fit window without compromising steerer stiffness.
Colours
Available in Titanium / Racing Red and Crystal Black / Foil.
Materials and construction
- Frame: Pro Level Layup carbon, with an hourglass-shaped headtube and CFD-optimised tube profiles
- Fork: carbon, with draft-deflecting blades
- Seatpost: D-shaped with integrated clamp
- Topological Compliance System (TCS)
- Geometry: Road Race Geometry
- Frameset contents: Argon 18 do not publish a full inclusions list, so please confirm exact package contents with us before ordering
Frameset
- Frame: Sum Pro, Pro Level Layup carbon, hourglass head tube, CFD-optimised tube profiles, Topological Compliance System
- Fork: Sum Pro specific carbon, draft-deflecting blades
- Headset: FSA No.55R 1.5in with 3D System
- Seatpost: Sum specific D-shaped, integrated clamp
- Bottom bracket: BB86
| Size | XXS (44-46) | XS (47-50) | S (51-53) | M (54-56) | L (57-59) | XL (60-62) |
|---|---|---|---|---|---|---|
| Stack (mm) | 471 | 493 | 516 | 540 | 565 | 592 |
| Reach (mm) | 375 | 382 | 389 | 397 | 405 | 414 |
| Seat tube length (mm) | 395 | 425 | 460 | 505 | 550 | 595 |
| Top tube (effective) (mm) | 503 | 520 | 538 | 557 | 578 | 600 |
| 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 |
| BB drop (mm) | 69 | 73 | 77 | 77 | 77 | 77 |
| Wheelbase (mm) | 967 | 972 | 975 | 990 | 1006 | 1020 |
| Standover (mm) | 676 | 700 | 727 | 766 | 804 | 841 |
| Head tube length (15mm 3D spacer) (mm) | 84 | 100 | 116 | 141 | 167 | 195 |
| Head tube length (25mm 3D spacer) (mm) | 94 | 110 | 126 | 151 | 177 | 205 |
| Stack (15mm 3D spacer) (mm) | 485 | 507 | 530 | 554 | 579 | 606 |
| Stack (25mm 3D spacer) (mm) | 495 | 517 | 540 | 564 | 589 | 616 |
| Reach (15mm 3D spacer) (mm) | 370 | 377 | 385 | 393 | 401 | 410 |
| Reach (25mm 3D spacer) (mm) | 367 | 374 | 382 | 390 | 398 | 407 |
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.
Free UK shipping available on all orders, excluding bikes, wheelsets and packages over 10kg in weight e.g. turbo trainers.
