Geometry ?
T-Lab R1 2026 geometry in sizes XS–XL: stack 537–618 mm, reach 364–413 mm, head angle 71–72.5°.
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Stack | 537 mm | 559 mm | 580 mm | 599 mm | 618 mm |
| Reach | 364 mm | 372 mm | 385 mm | 400 mm | 413 mm |
| Head angle | 71° | 72° | 72.5° | 72.5° | 72.5° |
| Seat angle | 74° | 73.5° | 73.5° | 73.5° | 73.5° |
| Seat tube (?) | 470 mm | 500 mm | 530 mm | 560 mm | 590 mm |
| Head tube | 130 mm | 150 mm | 170 mm | 190 mm | 210 mm |
| Top tube (effective) | 518 mm | 538 mm | 557 mm | 578 mm | 596 mm |
| BB drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 405 mm | 405 mm | 405 mm | 405 mm | 405 mm |
| Wheelbase | 984 mm | 990 mm | 1004 mm | 1026 mm | 1044 mm |
| Standover | 743 mm | 770 mm | 796 mm | 822 mm | 848 mm |
| Fork offset | 48 mm | 48 mm | 48 mm | 48 mm | 48 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: t-lab-bikes.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 XS (stack 537 / reach 364 mm).
Stack and reach within 12 mm of size S (stack 559 / reach 372 mm).
Stack and reach within 12 mm of size M (stack 580 / reach 385 mm).
Stack and reach within 12 mm of size L (stack 599 / reach 400 mm).
Stack and reach within 12 mm of size XL (stack 618 / reach 413 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 7 values for this model’s stem and bars. Add them