Loading geometry
Size chart for fitting. If this bike already feels right, find others with a similar riding position (size 420). Category: road-race.
| Size | Stack | Reach | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop |
|---|---|---|---|---|---|---|---|
| 420 | 506 mm | 377 mm | 70.6° | 75.0° | 408 mm | 974 mm | 74 mm |
| 455 | 518 mm | 383 mm | 71.0° | 74.5° | 408 mm | 980 mm | 74 mm |
| 485 | 533 mm | 389 mm | 71.6° | 74.0° | 408 mm | 988 mm | 72 mm |
| 510 | 543 mm | 394 mm | 71.9° | 73.5° | 408 mm | 994 mm | 72 mm |
| 530 | 558 mm | 399 mm | 72.2° | 73.0° | 410 mm | 1002 mm | 70 mm |
| 550 | 576 mm | 404 mm | 72.5° | 73.0° | 410 mm | 1012 mm | 70 mm |
| 570 | 592 mm | 409 mm | 72.8° | 72.5° | 412 mm | 1022 mm | 68 mm |
| 590 | 612 mm | 414 mm | 73.1° | 72.5° | 412 mm | 1034 mm | 68 mm |
Closest matches to this riding position — free, no login.







Stack and reach describe the frame's cockpit envelope better than traditional seat-tube sizing. If you know your preferred stack/reach from a bike that already fits, search within a few millimeters first, then check head angle and chainstay for handling feel. See the glossary for stack, reach, and HTA.