Compare
Argon 18 Nitrogen vs Fuji Transonic
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
- The Argon 18 Nitrogen starts $1 cheaper ($5,999 vs $6,000 for the Fuji Transonic).
- Our verdict scores the Argon 18 Nitrogen higher overall: 81/100 vs 74/100.
- The Argon 18 Nitrogen comes in 6 sizes, the Fuji Transonic in 7.
Argon 18 Nitrogen
Fuji Transonic
| Argon 18Nitrogen | FujiTransonic | |
|---|---|---|
| Overview | ||
| Brand | Argon 18 | Fuji |
| Build | Nitrogen SRAM Force AXS | Transonic 1.1 |
| 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. | Matte Carbon / Gold Flake. Fuji's store lists every size (XS-XXL) as sold out. Fuji gives the same 8.33 kg weight for the 1.1 and 1.3 without naming a size. |
| Price (MSRP) | $8,599$8,599$8,599 | $6,500$6,500$6,500 |
| Bike weight | — | 8.33 kg18.4 lb |
| Model year | 2026 | 2022 |
| Generation | 2025 relaunch | Kamm-tail Transonic (2020 model year) |
| Launched | 2025-09 | — |
| Discipline | Aero road | Aero road |
| UCI legal | Not stated | Yes |
| Verdict (out of 100) | ||
| Overall score | 81 | 74 |
| Aero | 88 | 72 |
| Frame | 80 | 70 |
| Components | 80 | 76 |
| Fit | 80 | 84 |
| Practicality | 72 | 64 |
| Price | 84 | 84 |
| Weight | — | 69 |
| Frame & fork | ||
| Frame material | Carbon (Nitrogen 'Elite' layup) | Carbon (C15 ultra high-modulus, high-compaction moulding) |
| Fork material | Carbon | Carbon (C15 ultra high-modulus), 100x12 mm thru-axle |
| Frame sizes | XXS, XS, S, M, L, XL | XS (49), S (52), M (54), L (56), XL (58), XXL (61) on sale; the geometry chart also lists XXS (46) |
| Colours | Harvest Moon, Cosmic Teal | Matte Carbon / Gold Flake (1.1), Matte Carbon / Oil Slick (1.3) |
| Also available as | Nitrogen Pro, the higher carbon layup of the same platform | — |
| UCI frame approval | — | Approved 9 Apr 2018 as 'TRANSONIC DISC' (frame and fork), sizes 46 - 61 (7), code FUJI-TRAD-RD (UCI list version 2026.10.02) |
| Compatibility & standards | ||
| Brake type | Hydraulic disc | Hydraulic disc |
| Max rotor size | 160 mm | — |
| Wheel size | — | 700c |
| Max tire width | 32 mm | — |
| Bottom bracket standard | T47 threaded, 85.5 mm shell | PF30 |
| 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 | — |
| 1x compatible | Yes | — |
| Max chainring | 57T | — |
| Front derailleur mount | Removable front derailleur hanger; plugs fill the holes for 1x | — |
| Cable routing | 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) | Two-piece: Oval Concepts 990 Aero carbon bar (31.8 mm clamp) and 790 Aero stem with an integrated computer mount |
| Standard stem and bar possible | Yes | — |
| Seatpost type | Argon 18 Nitrogen aero carbon seatpost | Proprietary Transonic aero carbon seatpost |
| 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) | FSA integrated, 1-1/4 in upper, 1-1/2 in lower |
| 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 | Aero seatpost, front-derailleur mount, headset compression ring and fork thru-axle plugs (sold by Fuji as Transonic spare parts) |
| Sold via | Through Argon 18 dealers | Fuji's online store and dealers; Fuji's distribution is being reorganised (see notes) |
| Drivetrain | ||
| Groupset | SRAM Force AXS E1 | SRAM Force AXS |
| Launched | 2025 · current generation | — |
| Speeds | 12-speed | 12-speed |
| Electronic | Yes | Yes |
| Wireless | Yes | Yes |
| Drivetrain | 2x | 2x |
| Shifters | SRAM Force AXS E1 | SRAM Force AXS |
| Crankset | SRAM Force AXS E1 Power Meter | SRAM Force AXS |
| Chainrings | 48/35 | 48/35 |
| Material | — | Carbon |
| Power meter | SRAM Force AXS E1 Power Meter | — |
| Launched | 2025 · current generation | — |
| Bottom bracket | SRAM T47 | SRAM DUB PF30 |
| Standard | T47 threaded | PF30 |
| Notes | Listed by Argon 18 as 'T47 BB' without a brand | — |
| Front derailleur | SRAM Force AXS E1 | SRAM Force AXS |
| Rear derailleur | SRAM Force AXS E1 | SRAM Force AXS |
| Cassette | SRAM Force XG-1270 E1 | SRAM Force XG-1270 |
| Range | 10-33 | 10-28 |
| Speeds | 12-speed | 12-speed |
| Chain | SRAM Force E1 | SRAM Force |
| Brakes | ||
| Brake levers | — | SRAM Force AXS |
| Brake calipers | — | SRAM Force AXS |
| Type | — | Hydraulic disc |
| Notes | — | Fuji lists 160 mm rotors without naming a model |
| Rotors | SRAM Paceline X | — |
| Front rotor | 160 mm | — |
| Rear rotor | 140 mm | — |
| Mount | Center Lock | — |
| Wheels & tires | ||
| Wheelset | Scope R6.A | Vision TC55 |
| Front rim depth | 65 mm | — |
| Rear rim depth | 65 mm | — |
| Material | Carbon | Carbon |
| Tubeless ready | — | Yes |
| Tires | Vittoria Corsa N.EXT TLR | Vittoria Corsa G2.0 |
| Tire width | 30 mm | 28 mm |
| Cockpit | ||
| Handlebar | ATTEN CHB-01 Aero | Oval Concepts 990 Aero |
| Type | One-piece carbon bar and stem | Drop bar |
| Integrated stem | Yes | No |
| Widths available | 360 or 380 mm, each with 80-130 mm stems (12 sizes) | 380 mm (XXS), 400 mm (XS, S), 420 mm (M, L), 440 mm (XL, XXL) |
| Bar reach | — | 75 mm |
| Bar drop | — | 125 mm |
| 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. | 31.8 mm clamp |
| Stem | — | Oval Concepts 790 Aero |
| Stem length | — | 70 mm (XXS), 90 mm (XS, S), 100 mm (M), 110 mm (L), 120 mm (XL, XXL) |
| Notes | — | 3D-forged, -17 degree, integrated computer mount |
| Headset | Enduro 440C (IST3) | FSA Integrated, 1-1/4 in upper / 1-1/2 in lower |
| Saddle & seatpost | ||
| Saddle | Repente Quasar 2.0 | Selle Italia Model X |
| Seatpost | Argon 18 Nitrogen | Fuji Transonic Aero Carbon |
| Material | Carbon | Carbon |
| Bar tape | Ciclovation Leather Touch Tornado Gloss | — |
| Geometry (smallest – largest size) | ||
| Sizes | XXS, XS, S, M, L, XL | XXS (46), XS (49), S (52), M (54), L (56), XL (58), XXL (61) |
| Stack | 486–607 mm19.1–23.9″ | 487–596 mm19.2–23.5″ |
| Reach | 370–409 mm14.6–16.1″ | 367–418 mm14.4–16.5″ |
| Seat tube angle | 72.5–75° | 73–74.8° |
| Head tube angle | 71.2–73° | 70.6–73° |
| Head tube length | 81–192 mm3.2–7.6″ | 93–203 mm3.7–8″ |
| Effective top tube | 502–601 mm19.8–23.7″ | 500–600 mm19.7–23.6″ |
| Seat tube length | 395–595 mm15.6–23.4″ | 440–567 mm17.3–22.3″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 967–1,020 mm38.1–40.2″ | 971.3–1,030 mm38.2–40.6″ |
| BB drop | 71–79 mm2.8–3.1″ | 66–73 mm2.6–2.9″ |
| Fork length | 376 mm14.8″ | — |
| Fork offset | 45–49 mm1.8–1.9″ | 43–52 mm1.7–2″ |
| Standover | 682–848 mm26.9–33.4″ | 730–846 mm28.7–33.3″ |
| 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″ | 165–175 mm6.5–6.9″ |
| Stem length | 80–120 mm3.1–4.7″ | 70–120 mm2.8–4.7″ |
| Handlebar width | 360–380 mm14.2–15″ | 380–440 mm15–17.3″ |
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).