Principia Gravel 20 geometry
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Size 45cm
Render
Align
Geometry
| Size | 45cm | 50cm | 55cm | 61cm |
|---|---|---|---|---|
| Stack mm | 575.8 | 598.8 | 624.5 | 663.9 |
| Reach mm | 397.3 | 399 | 397.4 | 410.9 |
| Head tube angle ° | 70.0 | 71.0 | 71.5 | 73.0 |
| Seat tube angle ° | 74.5 | 74.5 | 74.5 | 74.5 |
| Head tube length mm | 135 | 155 | 180 | 215 |
| Seat tube mm | 450 | 500 | 550 | 610 |
| Chainstay mm | 435 | 435 | 435 | 435 |
| BB drop mm | 67 | 67 | 67 | 67 |
| Fork rake mm | 45 | 45 | 45 | 45 |
| Stack to reach | 1.45 | 1.50 | 1.57 | 1.62 |
| Effective top tube mmi | 557 | 565 | 571 | 595 |
| Wheelbase mmi | 1060 | 1060 | 1061 | 1070 |
Size45cmkey specs
Stack-to-reach (size 45cm)1.45More aggressive (lower and longer) than 87% of gravel frames in the database at comparable sizes.
Closest geometry matches (size 45cm)
Matched by stack, reach and head tube angle.
More from Principia
Nearest size to the Gravel 20 45cm.
Principia Gravel 22TiTANCurrent52cm · 573 / 368Principia Gravel 30Current51cm · 579.8 / 370.7Principia Gravel 40Current54cm · 579 / 389Principia Gravel C20Current50cm · 581.5 / 369.6Principia Gravel 10 / 20previous generation, undated45cm · 565.67 / 400.13Principia Gravel 30previous generation, undated54cm · 578.19 / 371.21