BikesPrincipiaGravel 40

Principia Gravel 40 (previous generation) geometry

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178 cm · 5 ft 10 in
auto85 cm · 33.5 in
Size 56cm

Render Align 50%

Geometry

Size48cm51cm54cm56cm58cm61cm
Stack mm531.9531.9554.6577598.4617.4
Reach mm373.5373.5378384392.7401.6
Head tube angle °69.569.570.571.571.572.0
Seat tube angle °74.074.074.073.573.573.5
Head tube length mm115115135155175195
Seat tube mm460490520540560590
Chainstay mm445445445445445445
BB drop mm676767676767
Stack to reach1.421.421.471.501.521.54
Effective top tube mmi526526537555570585
Size56cmkey specs
Stack-to-reach (size 56cm)1.50
More relaxed (taller and shorter) than 58% of gravel frames in the database at comparable sizes.

Closest geometry matches (size 56cm)

Matched by stack, reach and head tube angle.

Brother Cycles Mehteh2026Medium · 577 / 385MOSSO 730GVLCurrent550 · 575 / 385Wondercross WandererCurrentM · 575 / 385Bombtrack Tempest AL2026M · 578 / 386Specialized Diverge E5alloy, 2021 on54 · 578 / 383BH GravelX AT2026LA · 577 / 387

More from Principia

Nearest size to the Gravel 40 56cm.

Principia Gravel 20Current45cm · 575.8 / 397.3Principia Gravel 22TiTANCurrent54cm · 589 / 378Principia Gravel 30Current51cm · 579.8 / 370.7Principia Gravel 40Current54cm · 579 / 389Principia Gravel C20Current50cm · 581.5 / 369.6Principia Gravel 10 / 20previous generation, undated45cm · 565.67 / 400.13

Compare with another frame

Principia geometry chart · Frame stack and reach to the head tube top · Size finder assumes a 100mm stem on 20mm spacers · Report an error