Argon 18 Argon 18 Nitrogen - Ultegra Di2 - Harverst Moon 2025

£6,750.00

Finance available with Novuna Personal Finance

Limited Stock Available
M

Part Number:

NIT.M.384A.2D.1

Argon 18 Nitrogen - Now you can have it all






The new Argon 18 Nitrogen has been developed and engineered for optimal interaction between aerodynamic frame design, modern geometry, flexible rider fit & world-class components, the Argon 18 Nitrogen 105 di2 platform is built to perform in real world conditions, offering the performance and ride quality Argon 18 is recognized for. The Argon 18 Nitrogen delivers speed, lightness, fit and ride optimization.






Elite Level Layup






We believe the discerning cyclist deserves more than just trickle-down technology. Our Elite level bikes benefit from the same attention to detail as our Pro level ones.






Road Race Geometry






Our road race geometry is designed around the razor-sharp reflexes and precision handling required for racers of all levels.






Argon Fit System






Argon 18's fit system offers size-specific geometries to provide optimal performance and positioning for all sizes, guaranteeing no rider left behind.

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 Nitrogen, full carbon
  • Fork - Argon 18 Nitrogen
  • Headset - IST3 - Enduro Bearings 440c
  • Wheels - Scope R6.A
  • Tyres - Vittoria Corsa N.EXT TLR 30c
  • Tyre Clearance - 32c (34mm)
  • Bottom Bracket - TOKEN T47 BB
  • Front Derailleur - Shimano Ultegra Di2 R8150
  • Rear Derailleur - Shimano Ultegra Di2 R8150
  • Crankset - Shimano Ultegra R8100 52/36
  • Chain - Shimano Ultegra CN-M8100
  • Cassette - Shimano Ultegra CS-R8100 11/34
  • Shifters - Shimano Ultegra Di2 R8170
  • Brakes - Shimano Ultegra RT-CL800 / F:160mm R:140mm
  • Handlebar - ATTEN CHB-01 Aero Handlebar
  • Bar Tape - Ciclovation LEATHER TOUCH Tornado Gloss
  • Saddle - Repente Quasar 2.0
  • Seatpost - Argon 18 Nitrogen

Colours Harvest Moon
Sizes M
Brand Argon 18
Model Year 2025
SKUs / Part Numbers NIT.M.384A.2D.1

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