Good to know: Integrated cockpit
Integrated cockpit (a one-piece bar and stem) on at least one build. Changing the length means replacing the whole cockpit, and not every length exists. Check which length the bike actually ships with before you buy.
Geometry ?
Argon 18 Nitrogen Pro 2026 geometry in sizes XXS–XL: stack 486–607 mm, reach 370–409 mm, head angle 71.2–73°.
| XXS | XS | S | M | L | XL | |
|---|---|---|---|---|---|---|
| Stack | 486 mm | 508 mm | 531 mm | 555 mm | 580 mm | 607 mm |
| Reach | 370 mm | 377 mm | 384 mm | 392 mm | 400 mm | 409 mm |
| Head angle | 71.2° | 72.1° | 72.7° | 72.7° | 72.7° | 73° |
| Seat angle | 75° | 74.5° | 74° | 73.5° | 73° | 72.5° |
| Seat tube (c-t) | 395 mm | 425 mm | 460 mm | 505 mm | 550 mm | 595 mm |
| Head tube | 81 mm | 97 mm | 113 mm | 138 mm | 165 mm | 192 mm |
| Top tube (effective) | 502 mm | 519 mm | 537 mm | 557 mm | 578 mm | 601 mm |
| BB drop | 71 mm | 75 mm | 79 mm | 79 mm | 79 mm | 79 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 967 mm | 972 mm | 975 mm | 990 mm | 1006 mm | 1020 mm |
| Standover | 682 mm | 706 mm | 734 mm | 772 mm | 810 mm | 848 mm |
| Fork length | 376 mm | 376 mm | 376 mm | 376 mm | 376 mm | 376 mm |
| Fork offset | 49 mm | 49 mm | 45 mm | 45 mm | 45 mm | 45 mm |
| Stock build by size | ||||||
| Cranks | 165 mm | 165 mm | 170 mm | 170 mm | 172.5 mm | 172.5 mm |
| Stem | 80 mm | 90 mm | 90 mm | 100 mm | 110 mm | 120 mm |
| Bar width | 360 mm | 360 mm | 360 mm | 380 mm | 380 mm | 380 mm |
Source: argon18.com, checked 1 Nov 2026 · bar position: worked out from published data
Stock build
Nitrogen Pro SRAM RED AXS €13,995
- Groupset
- SRAM Red AXS E1 2×12
- Shifters
- SRAM RED AXS Shifter Set
- Cranks
- SRAM Red AXS Powermeter 48/35
- Stem
- ATTEN CHB-01 Aero Handlebar
- Handlebar
- ATTEN CHB-01 Aero Handlebar
- Seatpost
- Argon 18 Nitrogen Pro
- Saddle
- Repente Quasar CR 2.0
- List price
- €13,995 (argon18.com, 1 Nov 2026)
Nitrogen Pro Shimano Dura-Ace Di2 €13,495
- Groupset
- Shimano Dura-Ace Di2 R9200 2×12
- Shifters
- Shimano Dura-Ace Di2 R9270
- Cranks
- Shimano Dura-Ace R9200 52/36
- Stem
- ATTEN CHB-01 Aero Handlebar
- Handlebar
- ATTEN CHB-01 Aero Handlebar
- Seatpost
- Argon 18 Nitrogen Pro
- Saddle
- Repente Quasar CR 2.0
- List price
- €13,495 (argon18.com, 1 Nov 2026)
Nitrogen Pro Shimano Ultegra Di2 €10,995
- Groupset
- Shimano Ultegra Di2 R8100 2×12
- Shifters
- Shimano Ultegra Di2 R8170
- Cranks
- Shimano Ultegra R8100 52/36
- Stem
- ATTEN CHB-01 Aero Handlebar
- Handlebar
- ATTEN CHB-01 Aero Handlebar
- Seatpost
- Argon 18 Nitrogen Pro
- Saddle
- Repente Quasar CR 2.0
- List price
- €10,995 (argon18.com, 1 Nov 2026)
Source for all builds: argon18.com, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size XXS (stack 486 / reach 370 mm).
Argon 18 Nitrogen (2026)size XXS · stack 486 / reach 370 mmSwift Racevox G1 (2026)size 46 · stack 487 / reach 370 mmSwift Racevox G2 (2026)size 46 · stack 487 / reach 370 mmYoeleo Zen RS (2027)size XXS · stack 487 / reach 371 mmFuji Transonic (2022)size XXS · stack 487 / reach 367 mmOrigine Fraxion X (2026)size XS · stack 483 / reach 371 mm
Stack and reach within 12 mm of size XS (stack 508 / reach 377 mm).
Argon 18 Nitrogen (2026)size XS · stack 508 / reach 377 mmMountain Peak Expert (2026)size 440 · stack 508 / reach 377 mmCannondale SuperSix EVO (gen 5) (2026)size 48 · stack 508 / reach 376 mmCondor Acciaio Disc (2026)size 46 · stack 507 / reach 377 mmSpecialized Allez Sprint (2026)size 49 · stack 508 / reach 378 mmThompson Pilot (2026)size S · stack 509 / reach 376 mm
Stack and reach within 12 mm of size S (stack 531 / reach 384 mm).
Argon 18 Nitrogen (2026)size S · stack 531 / reach 384 mmRibble Endurance 725 Disc (2026)size S · stack 531 / reach 383 mmRitchey Road Logic Disc (2026)size 51cm · stack 531 / reach 385 mmCannondale SuperSix EVO (gen 5) (2026)size 52 · stack 532 / reach 383 mmGiant Propel Advanced (2027)size S · stack 530 / reach 383 mmGiant Propel Advanced Pro (2027)size S · stack 530 / reach 383 mm
Stack and reach within 12 mm of size M (stack 555 / reach 392 mm).
Argon 18 Nitrogen (2026)size M · stack 555 / reach 392 mmThömus Sliker Pro Ultimate (2026)size 57 · stack 556 / reach 392 mmVan Rysel EDR CF (gen 1) (2026)size M · stack 555 / reach 393 mmWilier Filante SLR (2027)size L · stack 555 / reach 391 mmPardus Robin Evo (2026)size L · stack 554 / reach 391 mmQuick Pro ER:ONE (2026)size L/520 · stack 556 / reach 393 mm
Stack and reach within 12 mm of size L (stack 580 / reach 400 mm).
Argon 18 Nitrogen (2026)size L · stack 580 / reach 400 mmSonder Colibri AL (2026)size Large · stack 580 / reach 400 mmCanyon Aeroad CF SLX (2027)size L · stack 580 / reach 401 mmCanyon Aeroad CFR (2027)size L · stack 580 / reach 401 mmCanyon Ultimate CF SL (2027)size L · stack 580 / reach 401 mmCanyon Ultimate CF SLX (2027)size L · stack 580 / reach 401 mm
Stack and reach within 12 mm of size XL (stack 607 / reach 409 mm).
Argon 18 Nitrogen (2026)size XL · stack 607 / reach 409 mmBMC Teammachine R 01 (2027)size 61 · stack 608 / reach 409 mmBMC Teammachine R Mpc. (2026)size 61 · stack 608 / reach 409 mmBMC Teammachine SLR (gen 4) (2026)size 61 · stack 608 / reach 409 mmBMC Teammachine SLR (gen 5) (2027)size 61 · stack 608 / reach 409 mmBMC Teammachine SLR 01 (gen 5) (2027)size 61 · stack 608 / reach 409 mm
Spotted a mistake or a missing build? Let me know.