Argon 18 Argon 18 Dark Matter - Sram Force XPLR - Root Beer 2025

£6,500.00

Finance available with Novuna Personal Finance

Limited Stock Available
XS
S
M
L

Part Number:

DM.L.373B.2E.1

Argon 18 Dark Matter - The Ultimate "Get Over It" Gravel Machine

Elevate your gravel game with the Argon 18 Dark Matter SRAM Force XPLR AXS edition. Featuring the revolutionary Sram Force 13-speed wireless drivetrain, this build is designed for competitive riders who demand precision without the weight. The Force-level groupset brings pro-tier ergonomics, carbon crank arms, and the ultra-reliable Orbit fluid damper for silent, secure chain management on the roughest descents. Paired with the Dark Matter’s new 57mm tire clearance and integrated downtube storage, this setup is the definitive choice for those aiming for the podium at Unbound or exploring deep into the backcountry

The Argon 18 Dark Matter isn't just a gravel bike - it’s a high-performance system engineered to thrive where others turn back. Finished in the sophisticated and rugged Root Beer colourway, this latest iteration of the Dark Matter is lighter, faster, and more capable than ever. Whether you are lining up for a 200km gravel race or heading into the wilderness for a multi-day bike packing trip, the Dark Matter is built to help you "get over" any obstacle.

Performance Highlights:

  • SRAM Force XPLR AXS Wireless Shifting: Experience the pinnacle of gravel drivetrains. The 1x13 wireless system provides crisp, instant shifting and a wide gear range to conquer steep UK climbs and fast fire-road descents.
  • Unrivalled Tyre Clearance: With space for up to 57mm tyres, the Dark Matter offers mountain bike-level grip and comfort while maintaining the agility of a road racer.
  • Storage Optimisation System (SOS): Keep your silhouette sleek. The integrated downtube storage compartment allows you to carry tools, tubes, and nutrition inside the frame, lowering your centre of gravity for better handling.
  • Adventure-Ready Geometry: Updated for 2025/26, the geometry features a longer wheelbase and a slightly slacker head angle, providing rock-solid stability on loose gravel without losing the snappy responsiveness Argon 18 is famous for.
  • Topological Compliance System: The carbon layup is specifically tuned to dampen road chatter and high-frequency vibrations, reducing fatigue on long-distance endurance rides.

Professionally Built Before Dispatch

Every bike purchased from On It Sports is built in-store by our experienced team and undergoes a full pre-delivery inspection (PDI) before being carefully prepared for shipping.

We take pride in ensuring each bike leaves our workshop properly assembled, checked, and ready for final setup, helping you enjoy a smooth and confident first ride.

Some final assembly will be required on delivery, but we aim to keep this to a minimum wherever possible.


Free UK Mainland Bike Delivery

  • Free UK mainland delivery on bikes over £1000*
  • Bikes are professionally built, checked, and securely boxed before dispatch
  • Shipped using trusted UK courier services

*Bikes purchased through Cycle to Work schemes are excluded from free shipping.

A standard bike delivery charge of £45 applies.


Collect In Store & Free Basic Bike Fit

If you choose to collect your bike from our store, you’ll receive a free basic bike fit as part of your collection.

This includes:

  • Correct saddle height and position
  • Basic reach and comfort checks
  • Confidence that your bike is set up correctly from day one

Once your bike is ready, we’ll contact you by email to arrange a convenient collection and bike fit appointment.


Returns, Refunds & Exchanges

If you’re not completely satisfied with your purchase, please let us know. We offer a 30-day return or exchange period on items purchased with a valid receipt.

To be eligible for a return or exchange:

  • Items must be unused and in a resaleable condition
  • Original packaging, accessories, labels, and any free or promotional items must be included

Returns requested after 30 days cannot be accepted.

Save with Cycle to Work

We accept Cycle to Work vouchers on most full-price bikes through a wide range of approved schemes. Simply choose your bike, proceed through checkout, and select your Cycle to Work scheme at the payment stage.

Our checkout will guide you through the process, including any additional information required by your chosen scheme.


What You Can Include

Your Cycle to Work voucher can be used on:

  • Bikes
  • Helmets
  • Shoes
  • Clothing
  • Essential cycling accessories

This allows you to maximise your voucher and get everything you need in one purchase.


Using Cycle to Work at Checkout

When you reach payment:

  1. Select Cycle to Work as your payment option
  2. Choose your scheme from the dropdown list
  3. Enter the required voucher or scheme details
  4. Complete checkout

Our team will then process your order and contact you if anything further is required.


Important Information on Sale Bikes

* Sale bikes purchased using a Cycle to Work voucher may be subject to a surcharge.

This reflects the commission charged by Cycle to Work scheme providers.

If you’re considering using a Cycle to Work voucher on a discounted bike and want to confirm pricing before ordering, please contact us and we’ll be happy to help.

Why Shop With ONIT Sports?

At ONIT Sports, we aren't just a retailer; we’re a hub for the South Wales cycling and triathlon community. As a leading independent cycle specialist in South Wales, we know that the right bike isn't just about the specs - it’s about how it feels on the road, the trail, or in a TT. Whether you’re visiting us in-store or browsing online, you’re getting advice from people who live and breathe life on two wheels.

Expert Build & Safety Check

Every bike that leaves our hands is professionally assembled and safety-checked by our fully trained technicians. We don’t just "box" bikes; we prepare them so that they arrive at your door, set-up and ready for the first mile.

Premium Delivery & Setup

We offer fast, secure UK shipping on all bikes. For that extra touch of care, we also provide a FREE bike fit on bikes collected in store - ensuring your new pride and joy is setup for you, ready for your first ride.

Flexible Finance with Novuna & PayPal

We believe top-tier performance should be accessible. We offer a range of flexible finance solutions through Novuna Personal Finance, as well as PayPal options, allowing you to spread the cost with a plan that suits your budget

Cycle to Work Specialists

Looking to save on your next ride? We proudly accept a wide range of Cycle Scheme vouchers, helping you make the most of tax-free cycling benefits with zero hassle.

Start your cycling journey with On It Sports, and hit the road with the total confidence that only expert-level support can provide.

  • Frame - Argon 18 Dark Matter
  • Forks - Argon 18 Dark Matter
  • Rear Derailleur - SRAM Force XPLR AXS E1
  • Shifters - SRAM Force AXS E1
  • Chainset - SRAM Force XPLR, 40T
  • Bottom Bracket - SRAM BB DUB T47 Wide
  • Chain - SRAM Force Chain E1
  • Cassette/Freewheel - SRAM Force XPLR XG-1371, 10-46T
  • Headset - FSA
  • Stem - FSA SMR-II
  • Handlebars - FSA A-Wing Pro AGX
  • Brakes - SRAM Force AXS E1, SRAM Centerlock Paceline / F:160mm R:160mm
  • Wheelset - ZIPP 303 XPLR S
  • Tyres - Schwalbe G-One RX PRO, TLR 700x50c
  • Saddle - Repente Quasar S 2.0
  • Seatpost - Argon 18 TDS-C
Colours Root Beer
Sizes L, M, S, XS
Brand Argon 18
Model Year 2025
SKUs / Part Numbers DM.L.373B.2E.1, DM.M.373B.2E.1, DM.S.373B.2E.1, DM.XS.373B.2E.1.

Please note: Manufacturers can sometimes change the specification of the products from time to time.