Description:
Argon 18 Anti Matter SRAM RED XPLR AXS E1 - Flagship Aero Carbon Gravel Race Bike
The Argon 18 Anti Matter SRAM RED XPLR AXS E1 is the flagship complete-bike build for riders who want maximum speed, premium component performance, clean aero integration, and race-ready gravel capability in one package. It is built for riders comparing top-tier carbon gravel race bikes, aero gravel bikes, SRAM Red XPLR builds, and high-performance gravel bikes with integrated storage and modern wide-tire clearance.
The Anti Matter platform combines 55mm tire clearance, the ATTEN CHB-01 aero handlebar, an included ATTEN x Apidura frame bag, integrated aero bottle cages, an oversized bottom bracket area, aerodynamic seatpost design, and fast gravel geometry. The RED build adds SRAM Red XPLR AXS E1 wireless shifting, a SRAM Red power meter crank, ZIPP 303 XPLR SW wheels, CeramicSpeed SLT headset bearings, and a CeramicSpeed T47 BB Alpha bottom bracket.
Why buy the Anti Matter SRAM RED XPLR AXS E1?
Buy this model if you want the highest-performance Anti Matter build available from the source lineup. It is the best choice for competitive gravel racing, fast endurance gravel events, riders who train with power, and customers who want a premium build without planning major upgrades after purchase.
- Flagship SRAM Red XPLR AXS E1 wireless gravel drivetrain
- SRAM Red 1 power meter aero crank for training, pacing, and race-day execution
- ZIPP 303 XPLR SW wheels for premium gravel speed and tire integration
- CeramicSpeed SLT headset and CeramicSpeed T47 BB Alpha
- ATTEN CHB-01 aero handlebar and ATTEN x Apidura frame bag included
- 55mm tire clearance for modern fast gravel tires
Which Anti Matter build should you buy?
| Build | Best For | Why Choose It |
|---|---|---|
| SRAM RED XPLR AXS E1 | Flagship gravel racing and premium builds | Choose RED for the most premium Anti Matter complete bike, with SRAM Red XPLR AXS E1, ZIPP 303 XPLR SW wheels, CeramicSpeed upgrades, Red power meter crank, and the highest-end spec. |
| SRAM Force XPLR AXS E1 | Performance-focused gravel racers | Choose Force for premium wireless shifting, a power meter, ZIPP 303 XPLR S wheels, and a lower price than the RED build. |
| SRAM Rival AXS E1 | High-value wireless gravel performance | Choose Rival for the same Anti Matter aero carbon platform, wireless AXS shifting, integrated storage, and a lower price than Force or RED. |
Specifications
| Category | Component | Specification |
|---|---|---|
| Frameset | Frame | Anti Matter |
| Frameset | Fork | Anti Matter |
| Frameset | Headset | IST3 - CeramicSpeed SLT Bearings |
| Frameset | Integrated Cables | Yes |
| Frameset | Storage Optimization System | ATTEN x Apidura frame bag included |
| Wheels | Wheels | ZIPP 303 XPLR SW |
| Wheels | Tires | Schwalbe G-One RS PRO, TLR 700x45c |
| Wheels | Tire Clearance | 55 mm |
| Group | Bottom Bracket | CeramicSpeed T47 BB Alpha |
| Group | Rear Derailleur | SRAM Red XPLR AXS E1 |
| Group | Crankset | SRAM Red 1 PM E1 XPLR 44T Aero |
| Group | Chain | SRAM RED Chain E1 |
| Group | Cassette | SRAM Red XPLR XG-1391, 10-46T |
| Brakes | Brakes | SRAM Red AXS E1 |
| Brakes | Brake Levers | SRAM Red AXS E1 |
| Brakes | Rotors | SRAM Paceline X / F:160mm R:160mm |
| Brakes | Shifters | SRAM Red AXS E1 |
| Other | Handlebar | ATTEN CHB-01 Aero Handlebar |
| Other | Stem | ATTEN CHB-01 Aero Handlebar |
| Other | Bar Tape | Ciclovation LEATHER TOUCH Tornado Gloss |
| Other | Saddle | Repente Quasar CR Carbon Rail |
| Other | Seatpost | Argon 18 Anti Matter Aero, 20mm SB |
Geometry
| Measurement | Unit | XXS 44-46 |
XS 47-50 |
S 51-53 |
M 54-56 |
L 57-59 |
XL 60-62 |
|
|---|---|---|---|---|---|---|---|---|
| A | Seat Tube Height | cm | Contact us | 42.5 | 46.0 | 50.5 | 55.0 | 59.5 |
| B | Seat Tube Angle | deg | Contact us | 74.5 | 74.0 | 73.5 | 73.0 | 72.5 |
| C | Head Tube Angle | deg | Contact us | 70.7 | 71.1 | 71.7 | 71.1 | 72.2 |
| D | Top Tube Length | cm | Contact us | 52.0 | 53.8 | 55.8 | 57.8 | 60.1 |
| E | Chain Stay | cm | Contact us | 42.5 | 42.5 | 42.5 | 42.5 | 42.5 |
| F | Wheelbase | cm | Contact us | 100.4 | 101.6 | 102.2 | 103.9 | 105.2 |
| G | BB Drop | cm | Contact us | 8.0 | 7.8 | 7.8 | 7.6 | 7.6 |
| H1 | Head Tube Length | cm | Contact us | 7.6 | 10.1 | 12.2 | 15.0 | 17.6 |
| I | Stand Over Height | cm | Contact us | 71.4 | 74.9 | 78.8 | 82.8 | 86.6 |
| L | Fork Length, Axle-to-Crown | cm | Contact us | 400.0 | 400.0 | 400.0 | 400.0 | 400.0 |
| R | Fork Rake | cm | Contact us | 51.0 | 51.0 | 51.0 | 51.0 | 51.0 |
Fit: Stack and Reach
| Measurement | Unit | XXS 44-46 |
XS 47-50 |
S 51-53 |
M 54-56 |
L 57-59 |
XL 60-62 |
|
|---|---|---|---|---|---|---|---|---|
| J | Stack | cm | Contact us | 50.8 | 53.1 | 55.5 | 58.0 | 60.7 |
| K | Reach | cm | Contact us | 37.7 | 38.4 | 39.2 | 40.0 | 40.9 |
| Saddle Height Min | cm | Contact us | 59.5 | 63.0 | 67.5 | 72.0 | 76.5 | |
| Saddle Height Max | cm | Contact us | 74.5 | 78.0 | 82.5 | 87.0 | 91.5 |
FAQ
What makes the Anti Matter SRAM RED XPLR AXS E1 the top build?
The RED XPLR AXS E1 build is the premium Anti Matter complete bike. It combines the Anti Matter aero carbon gravel platform with SRAM Red XPLR AXS E1 wireless shifting, SRAM Red power meter crank, ZIPP 303 XPLR SW wheels, CeramicSpeed headset and bottom bracket upgrades, the ATTEN aero handlebar, and the included ATTEN x Apidura frame bag.
Who should buy the SRAM RED XPLR AXS E1 instead of Force or Rival?
Choose RED if you want the lightest and most refined Anti Matter build, the highest-end SRAM XPLR drivetrain, the most premium wheel package, and a race-ready spec without upgrading parts after purchase. Choose Force if you still want premium race performance at a lower price, and Rival if value is the top priority.
Is the Anti Matter designed more for racing or adventure riding?
Anti Matter is Argon 18's aero-focused gravel race platform. It can handle long endurance rides and mixed-surface adventures, but its best fit is riders who prioritize speed, efficient positioning, integrated storage, tire clearance, and confident control on fast gravel courses.
What tire clearance does the Anti Matter have?
The Anti Matter platform is listed with 55mm tire clearance, giving riders room for fast, wide gravel tires that improve comfort, control, and traction on rough surfaces.
Does the RED build include the ATTEN x Apidura frame bag?
Yes. The SRAM RED XPLR AXS E1 build includes the ATTEN x Apidura frame bag, designed for clean integration, aero performance, and easy access while maintaining a fast riding position.
Does SKU appear as a customer-facing variant?
No. Size and color are the customer-facing options. SKU is stored only in Shopify's Variant SKU field for inventory and ordering accuracy.
What size Anti Matter should I buy?
Use the geometry and stack/reach tables as a starting point, then confirm fit with rider height, inseam, saddle height, cockpit preference, flexibility, and intended gravel use. Contact us for fit help if you are between sizes.
Shipping
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Return Policy
Our regular policy applies, please check our return policy for more details.