Velopedia Bicycle Archive
2025 Argon 18 Krypton Shimano Ultegra Di2
Original manufacturer specifications including Shimano Ultegra Di2 drivetrain, 700c wheels, geometry for 6 published sizes.
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What Velopedia knows
- Model year
- 2025
- Category
- Road
- Original MSRP
- $6,499.00
- Sizes
- XXS, XS, S, M, L, XL
- Geometry
- 6 manufacturer sizes · Geometry context
- Record coverage
- 18 preserved details · 2 archived images · original MSRP · preserved geometry
- Archive ID
- 900002283
Frameset
| Frame Construction | Krypton |
|---|---|
| Fork | Krypton |
Drivetrain
| Component Group | Shimano Ultegra Di2 |
|---|---|
| Shifters | Shimano Ultegra Di2 R8170 |
| Front Derailleur | Shimano Ultegra Di2 R8150 |
| Rear Derailleur | Shimano Ultegra Di2 R8150 |
| Bottom Bracket | Token T47 24mm |
| Cassette | Shimano Ultegra CS-R8100 11/34 |
| Chain | Shimano Ultegra CN-M8100 |
Brakes
| Brakes | Shimano Ultegra Di2 R8170; Rotors: Shimano Ultegra RT-CL800 / F:160mm R:140mm |
|---|
Cockpit & Contact Points
| Headset | Ist2 |
|---|---|
| Stem | FSA SMR |
| Saddle | Repente Quasar |
| Seatpost | Argon 18 TDS-C |
Wheels & Tires
| Wheels | Scope R4 |
|---|---|
| Front Tire | Vittoria Corsa N.EXT 32-622 TLR, black G2.0 |
| Rear Tire | Vittoria Corsa N.EXT 32-622 TLR, black G2.0 |
| Wheel Size | 700c |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Seat tube | 420 mm | 450 mm | 485 mm | 520 mm | 555 mm | 590 mm |
| Effective top tube | 496 mm | 516 mm | 537 mm | 558 mm | 580 mm | 604 mm |
| Head tube | 106 mm | 123 mm | 142 mm | 164 mm | 186 mm | 208 mm |
| Head-tube angle | 70.6° | 71.5° | 72.3° | 72.3° | 72.3° | 72.8° |
| Seat-tube angle | 75.5° | 74.9° | 74.3° | 73.7° | 73.1° | 72.5° |
| Chainstay / rear center | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm |
| Wheelbase | 975 mm | 984 mm | 989 mm | 1005 mm | 1020 mm | 1033 mm |
| Bottom-bracket drop | 80 mm | 80 mm | 78 mm | 78 mm | 78 mm | 78 mm |
| Reach | 357 mm | 367 mm | 377 mm | 386 mm | 395 mm | 406 mm |
| Stack | 523 mm | 543 mm | 563 mm | 584 mm | 605 mm | 628 mm |
| Standover height | 675 mm | 704 mm | 738 mm | 770 mm | 801 mm | 832 mm |
Geometry source: Argon 18 first-party labeled geometry and fit matrix ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
XXS geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its reach of 357 mm sits toward the shorter end. The seat angle of 75.5° sits toward the steeper end.
Compared with 38 distinct road geometries in the XXS-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XXS geometry XS geometry
Archive context: Its bottom-bracket drop of 80 mm sits toward the deeper-drop end. Its stack of 543 mm sits toward the taller end. Its reach of 367 mm sits toward the shorter end.
Compared with 69 distinct road geometries in the XS-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XS geometry S geometry
Archive context: Its stack of 563 mm sits toward the taller end. Its bottom-bracket drop of 78 mm sits toward the deeper-drop end. The head angle of 72.3° sits somewhat steeper than typical.
Compared with 93 distinct road geometries in the Small-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze S geometry M geometry
Archive context: Its stack of 584 mm sits toward the taller end. Its bottom-bracket drop of 78 mm sits toward the deeper-drop end. Its wheelbase of 1005 mm sits somewhat longer than typical.
Compared with 94 distinct road geometries in the Medium-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M geometry L geometry
Archive context: Its bottom-bracket drop of 78 mm sits toward the deeper-drop end. Its stack of 605 mm sits toward the taller end. The head angle of 72.3° sits somewhat slacker than typical.
Compared with 82 distinct road geometries in the Large-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze L geometry XL geometry
Archive context: The seat angle of 72.5° sits toward the more relaxed end. Its bottom-bracket drop of 78 mm sits toward the deeper-drop end. Its stack of 628 mm sits toward the taller end.
Compared with 67 distinct road geometries in the XL-equivalent size cohort from model years 2023–2027 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XL geometry Parts & serviceability
Find replacement parts
Shimano Ultegra CN-M8100
Exact archived model
Shimano Ultegra CS-R8100 11/34
Exact archived model
Vittoria Corsa N.EXT 32-622 TLR, black G2.0
Named tire and published size
More qualified parts (5)
Shimano Ultegra Di2 R8170
Brake model identified — verify pad shape
Shimano Ultegra Di2 R8150
Component family — verify exact version
Shimano Ultegra Di2 R8150
Component family — verify exact version
Shimano Ultegra Di2 R8170
Component family — verify exact version
FSA SMR
Named archived component — verify dimensions
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the complete frame and fork in bright light for cracks, dents, distortion, corrosion, impact marks, suspicious paint differences or signs of repair. Check the head tube, bottom-bracket area, dropouts, joints and clamped surfaces especially closely.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- DrivetrainConfirm every shift-system battery charges, every shift control works and the derailleur moves cleanly across the cassette. Make sure the matching shift-system charger is included, then measure chain wear and inspect the cassette teeth.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
- Bottom bracketTurn the cranks slowly, feel for rough bearings and check for side-to-side play. Creaking under load deserves investigation but does not identify the source by itself.Inspect the bottom bracket and shell →
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2025 Argon 18 Krypton Shimano Ultegra Di2 · Road · Published sizes: XXS, XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Krypton · Fork: Krypton
Drivetrain
Check drivetrain wear →Archived: Group: Shimano Ultegra Di2 · Shifters: Shimano Ultegra Di2 R8170 · Front derailleur: Shimano Ultegra Di2 R8150 · Rear derailleur: Shimano Ultegra Di2 R8150 · Bottom bracket: TOKEN T47 24mm · Cassette: Shimano Ultegra CS-R8100 11/34 · Chain: Shimano Ultegra CN-M8100
Brakes
Inspect the brakes →Archived: Brakes: Shimano Ultegra Di2 R8170; Rotors: Shimano Ultegra RT-CL800 / F:160mm R:140mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 700c · Wheels: Scope R4 · Front tire: Vittoria Corsa N.EXT 32-622 TLR, black G2.0 · Rear tire: Vittoria Corsa N.EXT 32-622 TLR, black G2.0
Controls and contact points
Archived: Headset: IST2 · Stem: FSA SMR · Seatpost: Argon 18 TDS-C · Saddle: Repente Quasar
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.