Specialized Sirrus (A1 alloy) geometry
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Size XS
Render
Align
Geometry
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Stack mm | 552 | 572 | 589 | 614 | 648 |
| Reach mm | 392 | 398 | 406 | 412 | 422 |
| Head tube angle ° | 70.5 | 71.0 | 71.5 | 72.0 | 72.0 |
| Seat tube angle ° | 73.5 | 73.25 | 73.5 | 73.0 | 73.0 |
| Head tube length mm | 130 | 150 | 165 | 190 | 225 |
| Seat tube mm | 395 | 440 | 485 | 530 | 570 |
| Chainstay mm | 439 | 439 | 439 | 439 | 439 |
| BB drop mm | 70 | 70 | 70 | 70 | 70 |
| Fork rake mm | 51 | 51 | 51 | 51 | 51 |
| Stack to reach | 1.41 | 1.44 | 1.45 | 1.49 | 1.54 |
| Effective top tube mmi | 556 | 570 | 580 | 600 | 620 |
| Wheelbase mmi | 1050 | 1058 | 1067 | 1076 | 1097 |
SizeXSkey specs
Stack-to-reach (size XS)1.41More aggressive (lower and longer) than 81% of flat-bar frames in the database at comparable sizes.
Closest geometry matches (size XS)
Matched by stack, reach and head tube angle.
More from Specialized
Nearest size to the Sirrus XS.