Geometry ?
Twitter Gravel V1 2026 geometry in sizes 45–54: stack 547.6–610.5 mm, reach 377.7–407.3 mm, head angle 72–73.5°.
| 45 | 48 | 51 | 54 | |
|---|---|---|---|---|
| Stack | 547.6 mm | 568.5 mm | 589.5 mm | 610.5 mm |
| Reach | 377.7 mm | 381.9 mm | 388.4 mm | 407.3 mm |
| Head angle | 72° | 72.5° | 73° | 73.5° |
| Seat angle | 73.5° | 73.5° | 73° | 73° |
| Seat tube (c-t) | 450 mm | 480 mm | 510 mm | 540 mm |
| Head tube | 130 mm | 150 mm | 170 mm | 190 mm |
| Top tube (effective) | 539.9 mm | 550.3 mm | 568.6 mm | 593.9 mm |
| BB drop | 70 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 420 mm | 420 mm | 420 mm | 420 mm |
| Wheelbase | 1005 mm | 1011 mm | 1019 mm | 1039 mm |
| Fork length | 390 mm | 390 mm | 390 mm | 390 mm |
| Fork offset | 55 mm | 55 mm | 55 mm | 55 mm |
Source: twitterbikeusa.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 45 (stack 547.6 / reach 377.7 mm).
Apache Gila (2026)size 52 · stack 548 / reach 378 mmAuthor Ronin SL (2025)size 50 cm · stack 548 / reach 378 mmMegamo West (2027)size XS · stack 548 / reach 378 mmRitchey Break-Away Outback (2026)size S · stack 548 / reach 378 mmRitchey Outback (2026)size S · stack 548 / reach 378 mmAccent Freak Carbon v2 (2026)size S · stack 547 / reach 378 mm
Stack and reach within 12 mm of size 48 (stack 568.5 / reach 381.9 mm).
Bisan All Trail (2026)size 54 cm · stack 568 / reach 382 mmAuthor Ronin SL (2025)size 52 cm · stack 569 / reach 382 mmVitus Substance (2026)size M · stack 568 / reach 382 mmVoodoo Limba (2026)size M · stack 569 / reach 382 mmChumba SOCO (2026)size 54 · stack 569 / reach 381 mmSeven G-753 (Standard Fit) (2026)size 52 · stack 568 / reach 381 mm
Stack and reach within 12 mm of size 51 (stack 589.5 / reach 388.4 mm).
Temple Adventure Disc MK3 (2026)size L · stack 589 / reach 388 mmKona Rove DL (2026)size 54 · stack 588 / reach 388 mmRadon Regard AL (2026)size 56 · stack 588 / reach 389 mmCube Nuroad (alloy) (2027)size M · stack 589 / reach 390 mmSurly Straggler (2026)size 56 · stack 592 / reach 389 mmElves Eglath ARX (2026)size 55 · stack 590 / reach 386 mm
Stack and reach within 12 mm of size 54 (stack 610.5 / reach 407.3 mm).
Fara F/Gravel (2026)size XL · stack 610 / reach 407 mmICAN Graro (2026)size 58 · stack 610 / reach 406 mmScott Addict Gravel (HMF, previous generation) (2026)size XL/58 · stack 610 / reach 406 mmGhost Asket (alloy) (2026)size M · stack 612 / reach 407 mmBombtrack Audax (2024)size XL · stack 609 / reach 408 mmDistance 45 / 45i (2026)size XL · stack 612 / reach 408 mm
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 6 values for this model’s stem and bars. Add them