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Geometry plotter

Reach 385mm Principia RD4 / 51cm: 385
Stack 522mm Principia RD4 / 51cm: 522
Wheelbase 977mm Principia RD4 / 51cm: 977
Head angle 72.5° Principia RD4 / 51cm: 72.5
Seat angle 73.5° Principia RD4 / 51cm: 73.5

1 bicycle drawn to scale

Dimensions

Published geometry

Each bicycle at its drawn size. Rows with a dimension on the drawing show it while hovered; click to keep it shown.

Published geometry of the drawn bicycles
Measurement Principia RD4 51cm
Reachmm 385.3
Stackmm 522.1
Top tube lengthmm 540
Seat tube lengthmm 510
Head tube lengthmm 120
Head tube angle 72.5°
Seat tube angle 73.5°
Chainstay lengthmm 408
Wheelbasemm 976.9
Front centermm 579
Bottom bracket dropmm 70
Bottom bracket heightmm 273
Standover heightmm 744.4
Fork rakemm 45
Trailmm 59.3
Stack/reach ratio 1.36

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length, Dropper post travel.