Argon 18Nitrogen
Argon 18's aero road bike.
- Aerotype
- Carbonframe
- 10listings now
Typical used price
£1,312
from £746 · 7 listings
Typical new / ex-demo
£4,086
from £2,587 · 3 listings
· 43% below typical
View on eBay →
Updated 2h ago
Price history
eBay UK · median Buy It Now asking price
We started tracking this bike on 20 Oct 2026. The chart fills in as we record prices each day.
10 listings
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ARGON 18 NITROGEN Di2 SIZE SMALL CARBON ROAD BIKE CM6
Used
Electronic shifting SCarbon liverpool742005 · 100% · 367 feedback£746 collection or postage not shown 43% below typical -
Argon 18 nitrogen, medium, custom aero road / TT bike (updated listing) BN1
Used
MCarbon scott.92 · 100% · 418 feedback£900 collection or postage not shown 31% below typical -
Argon 18 Nitrogen Carbon Road Bike 700C Rim Brake Size S Black/White/Red SO31
Used
SCarbonRim brakes miquislittleshop · 100% · 10 feedback£1,027 collection or postage not shown 22% below typical -
Argon 18 Nitrogen 2018 Carbon Fibre Road Bike Small Rim Brake G75
Used
SCarbonRim brakes2018 www-streamlinebicycles-com · 100% · 457 feedback£1,312 incl. £35 delivery About typical -
Argon 18 Nitrogen Road Bike Large Grey/Black 700C full Ultegra NP24
Used
Ultegra LCarbon alexster1991 · 100% · 57 feedback£1,537 collection or postage not shown 17% above typical -
£2,047 collection or postage not shown 56% above typical -
Argon 18 Nitrogen Disc - Medium PE7
Used
MCarbonDisc brakes nathantweedie · 0% · 25 feedback · check carefully£2,097 incl. £50 delivery 60% above typical -
Argon 18 Carbon Nitrogen Disc 55cm Road bike TT triathlon. Med, ultegra, fulcrum SK12
New / ex-demo
Ultegra 55cm · MCarbonDisc brakes stockport-cycles · 90% · 46 feedback · check carefully£2,587 incl. £30 delivery 37% below typical -
ARGON 18 NITROGEN DISC, FROZEN STEEL COLOUR, FULL SRAM AXS RIVAL 12S W14
New / ex-demo
SRAM Rival electronicSteelDisc brakes redyamaha52 · 100% · 141 feedback£4,086 collection or postage not shown About typical -
ARGON 18 NITROGEN 2026 - ULTEGRA DI2 - MEDIUM BA15
New / ex-demo
Ultegra electronic MCarbon2026 zest_bikes · 100% · 234 feedback£5,519 incl. £20 delivery 35% above typical
Only seeing UK listings. Compare all 5 countries →
Before you buy a used Nitrogen
- Get the frame size right first. A bargain in the wrong size is no bargain. Check the seller's size against our size guide, and ask for the stack and reach if you're between sizes.
- Check carbon for cracks and crash damage. Ask for close-up photos of the top tube, down tube, fork, dropouts and around the seatpost clamp, and whether it's ever been crashed.
- Check it isn't stolen. Ask for the frame serial number (usually under the bottom bracket) and check it on BikeRegister. A genuine seller won't mind, and a receipt is a good sign.
- Confirm the groupset and wheels. Titles often say "Ultegra" when only the gears are. Ask what the brakes, chainset and wheels are, and how worn the chain and cassette are.
- Pay through eBay. eBay's Money Back Guarantee covers items that don't match the description, but only if you pay through eBay.
- Collection or courier? Many bikes are collection only. If it's being posted, ask how it'll be packed: a proper bike box with the derailleur protected.
Questions
How much is a used Argon 18 Nitrogen worth?
Based on current eBay UK Buy It Now listings, a used Argon 18 Nitrogen typically costs £1,312 including postage, with the cheapest at £746. These are asking prices, so a bike can sell for less.
How much does a new or ex-demo Argon 18 Nitrogen cost on eBay?
New and ex-demo Argon 18 Nitrogen bikes on eBay UK typically cost £4,086, from £2,587.
What type of bike is the Argon 18 Nitrogen?
Argon 18's aero road bike. It's a aero bike and most are carbon.
What sizes of Argon 18 Nitrogen are for sale?
Right now the most listed sizes are M (4), S (3), L (1). Use the frame size filter, or our size guide if you're not sure of yours.
