2004 Principia Evolution Base

Geometry

57cm (M/L)
46cm (XS)
49cm (XS/S)
51cm (S)
53cm (S/M)
55cm (M)
59cm (L)
61cm (L/XL)
63cm (XL)
65 (G)
Stack
575mm
—
—
—
—
—
—
—
—
—
Reach
395mm
—
—
—
—
—
—
—
—
—
Stack to Reach Ratio
1.46:1
—
—
—
—
—
—
—
—
—
Seat Tube Length, C-T
565mm
460mm
460mm
480mm
510mm
540mm
590mm
610mm
630mm
650mm
Top Tube Length, Effective/Horizontal Center
566mm
500mm
515mm
530mm
542mm
554mm
578mm
590mm
602mm
614mm
Top Tube Slope
3.4deg
—
—
—
—
—
—
—
—
—
Head Tube Angle
73deg
72deg
72deg
72.5deg
73deg
73deg
73.5deg
73.5deg
74deg
74deg
Seat Tube Angle
73.5deg
74deg
75.5deg
74.4deg
74deg
74deg
73.5deg
73deg
72.5deg
72deg
Head Tube Length
152mm
96mm
96mm
96mm
113mm
133mm
170mm
190mm
208mm
220mm
Bottom Bracket Drop
70mm
35mm
70mm
70mm
70mm
70mm
70mm
69mm
68mm
68mm
Bottom Bracket Height
264mm
280mm
264mm
264mm
264mm
264mm
264mm
265mm
266mm
266mm
Chainstay Length
405mm
—
—
—
—
—
—
—
—
—
Chainstay Length Horizontal
398.9mm
—
—
—
—
—
—
—
—
—
Front-Center
599.2mm
—
—
—
—
—
—
—
—
—
Front-Center Horizontal
598mm
558mm
570mm
574mm
579mm
591mm
606mm
612mm
619mm
626mm
Wheelbase
994mm
946mm
966mm
970mm
975mm
987mm
1001mm
1008mm
1019mm
1026mm
Fork Offset/Rake
46.5mm
—
—
—
—
—
—
—
—
—
Trail
53.5mm
mid/​neutral
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Mechanical Trail
51.2mm
—
—
—
—
—
—
—
—
—
Wheel Flop
15mm
—
—
—
—
—
—
—
—
—
Standover Height
799mm
701mm
725mm
735mm
758mm
782mm
824mm
854mm
865mm
892mm
Tire to Pedal Spindle
95.2mm
170 mm cranks
—
170 mm cranks
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170 mm cranks
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170 mm cranks
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170 mm cranks
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170 mm cranks
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170 mm cranks
—
170 mm cranks
—
170 mm cranks
—
170 mm cranks
Pedal Spindle to Ground Clearance
94mm
170 mm cranks
110mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
94mm
170 mm cranks
95mm
170 mm cranks
96mm
170 mm cranks
96mm
170 mm cranks

Base Build

57cm (M/L)
46cm (XS)
49cm (XS/S)
51cm (S)
53cm (S/M)
55cm (M)
59cm (L)
61cm (L/XL)
63cm (XL)
65 (G)
Wheel Size
700C/29 in
622 mm BSD
650B/27.5 in
584 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
23mm
23mm
23mm
23mm
23mm
23mm
23mm
23mm
23mm
23mm
Tire Outer Diameter
668mm
630mm
668mm
668mm
668mm
668mm
668mm
668mm
668mm
668mm
Bike Length with Tires
1662mm
1576mm
1634mm
1638mm
1643mm
1655mm
1669mm
1676mm
1687mm
1694mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Performance Road
Source:https://lfgss.microco.sm/api/v1/files/5703cb541b2e40fb46c13009c31f811ed8ec0025.pdf