Argon 18 Anti Matter Frameset
386A.FS
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 Anti Matter frameset is Argon 18's no-compromise gravel race platform, built for the fastest gravel races on the planet, where aerodynamics, stiffness and speed come first.
Key features
- Pro Level Layup carbon
- 55 mm maximum tyre clearance
- ATTEN CHB-01 aero handlebar included
- ATTEN x Apidura frame bag included
- Integrated aero bottle cage compatibility
- Aerodynamic seatpost
- Horizontal, dropped seat stays
- Argon Fit System — size-specific gravel geometry
Frame
| Layup | Pro Level Layup carbon |
|---|---|
| Cockpit | ATTEN CHB-01 aero handlebar |
| Seatpost | Aerodynamic seatpost |
| Max tyre clearance | 55 mm |
| Geometry | Gravel |
Builds
- Frameset — £4,395
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Frameset contents: Argon 18 do not publish a full frameset inclusions list on their GB site.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), with size-specific gravel geometry from the Argon Fit System. Maximum tyre clearance is 55 mm.
Colours
Available in Sea Foam / Neon, Mystic Dune and Iridium Silver.
Materials and construction
- Frame: Pro Level Layup carbon, gravel geometry, Argon Fit System
- Horizontal, dropped seat stays
- Aerodynamic seatpost and integrated aero bottle cage compatibility
- Maximum tyre clearance: 55 mm
- Included with the frameset: ATTEN CHB-01 aero handlebar and ATTEN x Apidura frame bag. Argon 18 do not publish a full frameset inclusions list, so please confirm exact package contents before ordering.
- 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)
- ★★★★★ 150+ five-star Google reviews
Frameset
- Frame: Anti Matter, Pro Level Layup carbon, horizontal dropped seat stays
- Fork: Anti Matter carbon
- Headset: IST3 with CeramicSpeed SLT bearings
- Seatpost: Aerodynamic seatpost
- Bottom bracket: T47
- Tyre clearance: 55mm
Cockpit and contact points
- Handlebar: ATTEN CHB-01 aero
Extras
- Included: ATTEN x Apidura frame bag
| Size | XS (47-50) | S (51-53) | M (54-56) | L (57-59) | XL (60-62) |
|---|---|---|---|---|---|
| Stack (mm) | 508 | 531 | 555 | 580 | 607 |
| Reach (mm) | 377 | 384 | 392 | 400 | 409 |
| Seat tube length (mm) | 425 | 460 | 505 | 550 | 595 |
| Top tube (effective) (mm) | 520 | 538 | 558 | 578 | 601 |
| Head tube length (mm) | 76 | 101 | 122 | 150 | 176 |
| Head tube angle (°) | 70.7 | 71.1 | 71.7 | 71.1 | 72.2 |
| Seat tube angle (°) | 74.5 | 74 | 73.5 | 73 | 72.5 |
| Chainstay length (mm) | 425 | 425 | 425 | 425 | 425 |
| BB drop (mm) | 80 | 78 | 78 | 76 | 76 |
| Wheelbase (mm) | 1004 | 1016 | 1022 | 1039 | 1052 |
| Fork length (mm) | 400 | 400 | 400 | 400 | 400 |
| Fork offset (mm) | 51 | 51 | 51 | 51 | 51 |
| Standover (mm) | 714 | 749 | 788 | 828 | 866 |
Measurements from Argon 18's published geometry, converted from cm to mm. Argon 18 does not list an XXS size.
Free UK shipping available on all orders, excluding bikes, wheelsets and packages over 10kg in weight e.g. turbo trainers.
