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Argon 18 Nitrogen vs Bianchi Oltre Comp
Pick up to 4 bikes. Rows line up component by component. Highlighted rows differ, and green marks the best value where lower or higher is clearly better.
Key differences
- Our verdict scores the Argon 18 Nitrogen higher overall: 81/100 vs 70/100.
Argon 18 Nitrogen
Bianchi Oltre Comp
| Argon 18Nitrogen | BianchiOltre Comp | |
|---|---|---|
| Overview | ||
| Brand | Argon 18 | Bianchi |
| Build | Nitrogen SRAM Force AXS | Oltre Comp 105 Di2 |
| Build notes | Harvest Moon or Cosmic Teal. Argon 18 lists the crank as 'SRAM Force AXS Powermeter 48/35'. Only USD is listed; Argon 18's other regional stores redirect to the US site. | Bianchi code YWB26, the 2026 ('NEW') spec in Celeste, Burgundy or Blu Notte. Prices are Bianchi's recommended retail prices (the UK price from Bianchi's Oltre page). |
| Price (MSRP) | $8,599$8,599$8,599 | €5,300€5,300£4,558 |
| Model year | 2026 | 2026 |
| Generation | 2025 relaunch | Oltre (2022 generation) |
| Launched | 2025-09 | — |
| Discipline | Aero road | Aero road |
| UCI legal | Not stated | Not stated |
| Verdict (out of 100) | ||
| Overall score | 81 | 70 |
| Aero | 88 | 80 |
| Frame | 80 | 66 |
| Components | 80 | 62 |
| Fit | 80 | 66 |
| Practicality | 72 | 62 |
| Price | 84 | 85 |
| Frame & fork | ||
| Frame material | Carbon (Nitrogen 'Elite' layup) | Carbon |
| Fork material | Carbon | Carbon, aero, integrated crown |
| Frame sizes | XXS, XS, S, M, L, XL | 47, 50, 53, 55, 57, 59 |
| Colours | Harvest Moon, Cosmic Teal | OK Celeste (Celeste Metallico / CK16 logo), OX Burgundy (chrome logo), QB Blu Notte (Acid logo) |
| Also available as | Nitrogen Pro, the higher carbon layup of the same platform | Oltre RC and Oltre Pro (higher grades), Oltre Race |
| Compatibility & standards | ||
| Brake type | Hydraulic disc | Hydraulic disc, flat mount |
| Max rotor size | 160 mm | — |
| Wheel size | — | 700c |
| Max tire width | 32 mm | — |
| Bottom bracket standard | T47 threaded, 85.5 mm shell | PressFit 86.5 x 41 |
| Front axle | 12 mm thru-axle (M12 x 1.5, 119 mm) | 12x100 thru-axle |
| Rear axle | 12x142 mm thru-axle (M12 x 1.0, 167.5 mm) | 12x142 thru-axle |
| Drivetrain compatibility | Electronic groupsets (the assembly guide covers wireless and wired routing only). 2x with 50-57T round chainrings (or oval of equivalent size); 1x up to 56T | Electronic and mechanical groupsets |
| Mechanical shifting possible | — | Yes |
| 1x compatible | Yes | — |
| Max chainring | 57T | — |
| Front derailleur mount | Removable front derailleur hanger; plugs fill the holes for 1x | — |
| Cable routing | Fully internal | Fully internal |
| Electronic battery location | On the bottom bracket cover / battery holder | — |
| Hydration & storage | ||
| Bottle mounts | 2 | — |
| Bottle mount locations | Down tube and seat tube, with the included ATTEN aero cages | — |
| Fit & adjustability | ||
| Cockpit | One-piece carbon bar and stem (ATTEN CHB-01 Aero) | One-piece bar and stem (Bianchi Reparto Corse integrated aero handlebar) on the 2026 builds |
| Standard stem and bar possible | Yes | — |
| Seatpost type | Argon 18 Nitrogen aero carbon seatpost | Bianchi Oltre carbon aero seatpost, 20 mm offset |
| Aerodynamics | ||
| Manufacturer aero claims | Argon 18's aero claims (24 W faster than the Sum Pro, CHB-01 cockpit and aero-cage savings) were published for the Nitrogen Pro; it doesn't publish separate figures for this layup | — |
| Tube profile | Truncated NACA-based profiles; off-axis head tube with the steerer set back from the leading edge; wide-stance fork; dropped seat stays | — |
| Travel, maintenance & warranty | ||
| Headset bearings | IST3 (Enduro 440C bearings on the complete bikes) | 1.5" top and bottom (Bianchi's 2026 spec sheets list an FSA No. 54 MR137 headset) |
| Derailleur hanger | UDH (SRAM Universal Derailleur Hanger), standard or direct-mount version | — |
| Proprietary parts | ATTEN CHB-01 cockpit, Nitrogen seatpost and clamp, BB cover/battery holder, thru-axles | Oltre aero seatpost and seat clamp; one-piece Reparto Corse cockpit on the 2026 builds |
| Frame warranty | — | Bianchi lists Oltre models among those with its conventional lifetime frame warranty for the registered first owner |
| Sold via | Through Argon 18 dealers | Bianchi dealers |
| Drivetrain | ||
| Groupset | SRAM Force AXS E1 | Shimano 105 Di2 R7100 |
| Launched | 2025 · current generation | 2022 · current generation |
| Speeds | 12-speed | 12-speed |
| Electronic | Yes | Yes |
| Wireless | Yes | — |
| Drivetrain | 2x | 2x |
| Shifters | SRAM Force AXS E1 | Shimano 105 Di2 ST-R7170 |
| Crankset | SRAM Force AXS E1 Power Meter | Shimano 105 R7100 |
| Chainrings | 48/35 | 50/34 |
| Crank lengths available | — | 165 mm (47-50), 170 mm (53-55), 172.5 mm (57-59) |
| Power meter | SRAM Force AXS E1 Power Meter | — |
| Launched | 2025 · current generation | — |
| Bottom bracket | SRAM T47 | Shimano SM-BB72-41B |
| Standard | T47 threaded | PressFit 86.5 x 41 |
| Notes | Listed by Argon 18 as 'T47 BB' without a brand | — |
| Front derailleur | SRAM Force AXS E1 | Shimano 105 Di2 R7150 |
| Rear derailleur | SRAM Force AXS E1 | Shimano 105 Di2 R7150 |
| Cassette | SRAM Force XG-1270 E1 | Shimano 105 R7101 |
| Range | 10-33 | 11-36 |
| Speeds | 12-speed | 12-speed |
| Chain | SRAM Force E1 | Shimano CN-M7100 |
| Brakes | ||
| Brake calipers | — | Shimano 105 BR-R7170 |
| Type | — | Hydraulic disc |
| Rotors | SRAM Paceline X | Shimano RT-CL700 |
| Front rotor | 160 mm | 160 mm |
| Rear rotor | 140 mm | 160 mm |
| Mount | Center Lock | Center Lock |
| Wheels & tires | ||
| Wheelset | Scope R6.A | Bianchi B 64R |
| Front rim depth | 65 mm | 64 mm |
| Rear rim depth | 65 mm | 64 mm |
| Material | Carbon | Carbon |
| Tubeless ready | — | Yes |
| Hubs | — | Ratchet system |
| Spokes | — | J-bend |
| Freehub options | — | Shimano HG |
| Notes | — | Bianchi lists the rim size as 25-622 |
| Tires | Vittoria Corsa N.EXT TLR | Continental Grand Prix TR |
| Tire width | 30 mm | 30 mm |
| Notes | — | Black |
| Cockpit | ||
| Handlebar | ATTEN CHB-01 Aero | Bianchi Reparto Corse integrated aero handlebar |
| Type | One-piece carbon bar and stem | One-piece bar and stem |
| Integrated stem | Yes | Yes |
| Widths available | 360 or 380 mm, each with 80-130 mm stems (12 sizes) | 90 mm x 400 mm (47-50), 100 x 420 (53), 110 x 420 (55-57), 120 x 440 (59) |
| Bar reach | — | 80 mm |
| Bar drop | — | 125 mm |
| Cable routing | — | Internal |
| Material | Carbon | Carbon |
| Weight | 320 g11.3 oz | — |
| Notes | Stock size by frame: 360 x 80 (XXS), 360 x 90 (XS-S), 380 x 100 (M), 380 x 110 (L), 380 x 120 (XL). Integrated computer mount with Garmin and Wahoo inserts and 3-12° tilt shims. Weight for 380 x 100 mm. | — |
| Headset | Enduro 440C (IST3) | FSA No. 54 (MR137) |
| Saddle & seatpost | ||
| Saddle | Repente Quasar 2.0 | Prologo Nago R4 PAS |
| Saddle width | — | 137 mm |
| Saddle length | — | 245 mm |
| Rails | — | Steel |
| Weight | — | 265 g9.3 oz |
| Seatpost | Argon 18 Nitrogen | Bianchi Oltre carbon aero seatpost |
| Offset / setback | — | 20 mm |
| Material | Carbon | Carbon |
| Notes | — | 280 mm long (47), 300 mm (50-55), 350 mm (57-59) |
| Bar tape | Ciclovation Leather Touch Tornado Gloss | Prologo Plaintouch |
| Thickness | — | 2.5 mm |
| Notes | — | Black |
| Geometry (smallest – largest size) | ||
| Sizes | XXS, XS, S, M, L, XL | 47, 50, 53, 55, 57, 59 |
| Stack | 486–607 mm19.1–23.9″ | 470–555 mm18.5–21.9″ |
| Reach | 370–409 mm14.6–16.1″ | 385–406 mm15.2–16″ |
| Seat tube angle | 72.5–75° | 73–74.5° |
| Head tube angle | 71.2–73° | 70.5–73° |
| Head tube length | 81–192 mm3.2–7.6″ | 83–153 mm3.3–6″ |
| Effective top tube | 502–601 mm19.8–23.7″ | 515–575 mm20.3–22.6″ |
| Seat tube length | 395–595 mm15.6–23.4″ | 450–570 mm17.7–22.4″ |
| Chainstay | 410 mm16.1″ | 410–412 mm16.1–16.2″ |
| Wheelbase | 967–1,020 mm38.1–40.2″ | 982–1,005 mm38.7–39.6″ |
| BB drop | 71–79 mm2.8–3.1″ | 58–68 mm2.3–2.7″ |
| Fork length | 376 mm14.8″ | 368 mm14.5″ |
| Fork offset | 45–49 mm1.8–1.9″ | 43 mm1.7″ |
| Front centre | — | 579–603 mm22.8–23.7″ |
| Standover | 682–848 mm26.9–33.4″ | — |
| Saddle height min | 565–765 mm22.2–30.1″ | — |
| Saddle height max | 715–915 mm28.1–36″ | — |
| Wheel size | — | 700c |
| Crank length | 165–172.5 mm6.5–6.8″ | 165–172.5 mm6.5–6.8″ |
| Stem length | 80–120 mm3.1–4.7″ | 90–120 mm3.5–4.7″ |
| Handlebar width | 360–380 mm14.2–15″ | 400–440 mm15.7–17.3″ |
| Handlebar reach | — | 80 mm3.1″ |
| Handlebar drop | — | 125 mm4.9″ |
Geometry overlay
Pick a size for each bike to see frames and arm-pad ranges on top of each other.
Drawn to scale (how to read it).