Geometry ?
Reilly Fusion 2026 geometry in sizes XS–XXL: stack 512–621 mm, reach 377–414 mm, head angle 71.5–74°.
| XS | S | M | L | XL | XXL | |
|---|---|---|---|---|---|---|
| Stack | 512 mm | 533 mm | 555 mm | 574 mm | 589 mm | 621 mm |
| Reach | 378 mm | 377 mm | 382 mm | 394 mm | 410 mm | 414 mm |
| Head angle | 71.5° | 72° | 73° | 73° | 73° | 74° |
| Seat angle | 75.5° | 74° | 73.5° | 73° | 73° | 72.5° |
| Seat tube (c-t) | 470 mm | 490 mm | 510 mm | 530 mm | 540 mm | 575 mm |
| Head tube | 110 mm | 130 mm | 150 mm | 170 mm | 185 mm | 215 mm |
| Top tube (effective) | 510 mm | 530 mm | 547 mm | 570 mm | 590 mm | 610 mm |
| BB drop | 72 mm | 72 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Chainstay | 414 mm | 414 mm | 414 mm | 414 mm | 414 mm | 414 mm |
| Wheelbase | 980 mm | 980 mm | 982 mm | 1000 mm | 1021 mm | 1024 mm |
| Fork offset | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm |
Source: reillytitanium.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 512 / reach 378 mm).
Stack and reach within 12 mm of size S (stack 533 / reach 377 mm).
Stack and reach within 12 mm of size M (stack 555 / reach 382 mm).
Stack and reach within 12 mm of size L (stack 574 / reach 394 mm).
Stack and reach within 12 mm of size XL (stack 589 / reach 410 mm).
Stack and reach within 12 mm of size XXL (stack 621 / reach 414 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 8 values for this model’s stem and bars. Add them