Geometry ?
Chumba Terlingua Steel 2026 geometry in sizes 50–60: stack 531–614 mm, reach 369–402 mm, head angle 71–72°.
| 50 | 52 | 54 | 56 | 58 | 60 | |
|---|---|---|---|---|---|---|
| Stack | 531 mm | 550 mm | 558 mm | 577 mm | 595 mm | 614 mm |
| Reach | 369 mm | 371 mm | 379 mm | 393 mm | 397 mm | 402 mm |
| Head angle | 71° | 71° | 71.5° | 71.5° | 72° | 72° |
| Seat angle | 74.5° | 74° | 73.5° | 73.5° | 73° | 73° |
| Seat tube (?) | 485 mm | 500 mm | 515 mm | 530 mm | 545 mm | 560 mm |
| Head tube | 100 mm | 120 mm | 130 mm | 150 mm | 170 mm | 190 mm |
| Top tube (effective) | 518 mm | 530 mm | 545 mm | 565 mm | 580 mm | 590 mm |
| BB drop | 71 mm | 71 mm | 68 mm | 68 mm | 65 mm | 65 mm |
(?) by the seat tube length: the manufacturer doesn’t say whether it’s measured centre to centre (c-c) or centre to top (c-t).
Source: chumbausa.com, checked 12 Nov 2026 · bar position: worked out from published data
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size 50 (stack 531 / reach 369 mm).
Stack and reach within 12 mm of size 52 (stack 550 / reach 371 mm).
Stack and reach within 12 mm of size 54 (stack 558 / reach 379 mm).
Stack and reach within 12 mm of size 56 (stack 577 / reach 393 mm).
Stack and reach within 12 mm of size 58 (stack 595 / reach 397 mm).
Stack and reach within 12 mm of size 60 (stack 614 / reach 402 mm).
Spotted a mistake or a missing build? Let me know.