Geometry ?
Argonaut GR3 2026 geometry in sizes 505–605: stack 515–635 mm, reach 357–411 mm, head angle 68–68.5°.
| 505 | 515 | 530 | 545 | 560 | 575 | 590 | 605 | |
|---|---|---|---|---|---|---|---|---|
| Stack | 515 mm | 527 mm | 546 mm | 562 mm | 571 mm | 581 mm | 611 mm | 635 mm |
| Reach | 357 mm | 364 mm | 374 mm | 379 mm | 385 mm | 397 mm | 403 mm | 411 mm |
| Head angle | 68° | 68.5° | 68.5° | 68.5° | 68.5° | 68.5° | 68.5° | 68.5° |
| Seat angle | 74° | 74° | 74° | 73.5° | 73° | 73° | 73° | 73° |
| Head tube | 100 mm | 110 mm | 130 mm | 150 mm | 160 mm | 170 mm | 205 mm | 230 mm |
| Top tube (effective) | 505 mm | 515 mm | 530 mm | 545 mm | 560 mm | 575 mm | 590 mm | 605 mm |
| BB drop | 77 mm | 77 mm | 77 mm | 75 mm | 75 mm | 75 mm | 73 mm | 73 mm |
| Chainstay | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm |
| Fork length | 395 mm | 395 mm | 395 mm | 395 mm | 395 mm | 395 mm | 395 mm | 395 mm |
| Fork offset | 57 mm | 57 mm | 57 mm | 57 mm | 57 mm | 57 mm | 57 mm | 57 mm |
Source: argonautcycles.com, checked 13 Nov 2026 · bar position: worked out from published data
Build
Built to measure. The stem, bars and other parts are chosen to suit the rider, so the bike has no stock build. According to the manufacturer’s website.
Frames with similar geometry
Stack and reach within 12 mm of size 505 (stack 515 / reach 357 mm).
Stack and reach within 12 mm of size 515 (stack 527 / reach 364 mm).
Stack and reach within 12 mm of size 530 (stack 546 / reach 374 mm).
Stack and reach within 12 mm of size 545 (stack 562 / reach 379 mm).
Stack and reach within 12 mm of size 560 (stack 571 / reach 385 mm).
Stack and reach within 12 mm of size 575 (stack 581 / reach 397 mm).
Stack and reach within 12 mm of size 590 (stack 611 / reach 403 mm).
Stack and reach within 12 mm of size 605 (stack 635 / reach 411 mm).
Spotted a mistake or a missing build? Let me know.