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Brands · Argon 18

Argon 18 Krypton: geometry and sizes

Argon 18 may sell more than one frame under the Krypton name, each with its own geometry. These are the ones in the database. Each shows stack and reach for the smallest and largest size. The numbers for every size are on the model page.

The tables show the smallest and largest size, each with stack / reach in millimetres. Both terms are explained in the glossary.

Current Argon 18 Krypton versions

VersionSmallestLargest
Krypton 2026
allroad · carbon
XXS · 523 / 357XL · 628 / 406
Krypton Pro 2026
allroad · carbon
XXS · 523 / 357XL · 628 / 406

Older Argon 18 Krypton model years

Frame geometry only, no build. Model years are approximate.

VersionSmallestLargest
Krypton Pro 2019–2022XXS · 519 / 359XL · 624 / 407
Krypton CS / Krypton GF 2018XXS · 509 / 362XL · 614 / 410

The same size label on two versions doesn’t mean the same frame. And stack and reach only describe the frame: where the bars end up also depends on the stem, spacers and bars.

There’s no sizing by height here. Everything starts from your position. Enter your position and I’ll work out which versions and sizes match it.