Principia Gravel 30 geometry
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Size 51cm
Render
Align
Geometry
| Size | 48cm | 51cm | 54cm | 56cm | 59cm |
|---|---|---|---|---|---|
| Stack mm | 557 | 579.8 | 602.8 | 621.7 | 642.8 |
| Reach mm | 366.3 | 370.7 | 382.2 | 391.7 | 400.2 |
| Head tube angle ° | 69.5 | 70.5 | 71.5 | 71.5 | 72.0 |
| Seat tube angle ° | 74.0 | 74.0 | 74.0 | 74.0 | 74.0 |
| Head tube length mm | 115 | 135 | 155 | 175 | 195 |
| Seat tube mm | 480 | 510 | 540 | 560 | 590 |
| Chainstay mm | 435 | 435 | 435 | 435 | 435 |
| BB drop mm | 67 | 67 | 67 | 67 | 67 |
| Fork rake mm | 45 | 45 | 45 | 45 | 45 |
| Stack to reach | 1.52 | 1.56 | 1.58 | 1.59 | 1.61 |
| Effective top tube mmi | 526 | 537 | 555 | 570 | 585 |
| Wheelbase mmi | 1027 | 1030 | 1039 | 1055 | 1064 |
Size51cmkey specs
Stack-to-reach (size 51cm)1.56More relaxed (taller and shorter) than 94% of gravel frames in the database at comparable sizes.
Closest geometry matches (size 51cm)
Matched by stack, reach and head tube angle.
Principia Gravel 30previous generation, undated54cm · 578.19 / 371.21Tideace GV202rear-suspension gravel, Current52 · 578 / 371Cannondale Topstone Carbon Lefty2021–24M · 579 / 3733T Ultra² ItaliaCurrentM · 580 / 368Salsa WarbirdGen 1, alloy / Ti, 2013–1555cm · 578.5 / 373.1Soma Fabrications Jawbone B-TypeCurrent52 · 582 / 369
More from Principia
Nearest size to the Gravel 30 51cm.
Principia Gravel 20Current45cm · 575.8 / 397.3Principia Gravel 22TiTANCurrent52cm · 573 / 368Principia Gravel 40Current54cm · 579 / 389Principia Gravel C20Current50cm · 581.5 / 369.6Principia Gravel 10 / 20previous generation, undated50cm · 588.61 / 401.76Principia Gravel 30previous generation, undated54cm · 578.19 / 371.21