Good to know: Sold as a frameset only
Sold as a frameset only You choose the stem and bars yourself, so I use the stem length that makes the size fit you. according to the manufacturer’s website
Geometry ?
Ritchey Montebello 2026 geometry in sizes XS–XXL: stack 551–650 mm, reach 380–409 mm, head angle 71–72.5°.
| XS | S | M | L | XL | XXL | |
|---|---|---|---|---|---|---|
| Stack | 551 mm | 572 mm | 593 mm | 610 mm | 631 mm | 650 mm |
| Reach | 380 mm | 385 mm | 390 mm | 394 mm | 400 mm | 409 mm |
| Head angle | 71° | 71.5° | 72° | 72° | 72.5° | 72.5° |
| Seat angle | 75° | 74.5° | 74° | 73.5° | 73.5° | 73.5° |
| Seat tube (c-t) | 465 mm | 490 mm | 515 mm | 540 mm | 570 mm | 600 mm |
| Head tube | 120 mm | 140 mm | 160 mm | 180 mm | 200 mm | 220 mm |
| Top tube (effective) | 528 mm | 544 mm | 560 mm | 575 mm | 587 mm | 602 mm |
| BB drop | 80 mm | 80 mm | 80 mm | 78 mm | 78 mm | 78 mm |
| Chainstay | 429 mm | 429 mm | 429 mm | 429 mm | 429 mm | 429 mm |
| Wheelbase | 1015 mm | 1022 mm | 1029 mm | 1039 mm | 1047 mm | 1062 mm |
| Standover | 756 mm | 778 mm | 800 mm | 822 mm | 847 mm | 871 mm |
| Fork length | 388 mm | 388 mm | 388 mm | 388 mm | 388 mm | 388 mm |
| Fork offset | 48 mm | 48 mm | 48 mm | 48 mm | 48 mm | 48 mm |
Source: ritcheylogic.com, checked 1 Nov 2026 · bar position: worked out from published data
An older model year in the archive with the same stack, reach and head angle: 2024. Source: bikepacking.com
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size XS (stack 551 / reach 380 mm).
Stack and reach within 12 mm of size S (stack 572 / reach 385 mm).
Stack and reach within 12 mm of size M (stack 593 / reach 390 mm).
Stack and reach within 12 mm of size L (stack 610 / reach 394 mm).
Stack and reach within 12 mm of size XL (stack 631 / reach 400 mm).
Stack and reach within 12 mm of size XXL (stack 650 / reach 409 mm).
Spotted a mistake or a missing build? Let me know.