2023 POSST Oblique Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Average stack and reachvs category

Geometry

50
52
54
56
58
Stack
550mm
565mm
580mm
600mm
620mm
Reach
360mm
363mm
373mm
382mm
393mm
Stack to Reach Ratio
1.53:1
1.56:1
1.55:1
1.57:1
1.58:1
Seat Tube Length, C-T
440mm
470mm
510mm
530mm
550mm
Top Tube Length, Effective/Horizontal HT Top
512mm
525mm
545mm
560mm
577mm
Top Tube Slope
14.8deg
12.9deg
10deg
9.8deg
9.6deg
Head Tube Angle
69.5deg
70deg
70.5deg
71deg
71deg
Seat Tube Angle
74.5deg
74deg
73.5deg
73.5deg
73.5deg
Head Tube Length
115mm
129mm
141mm
160mm
181mm
Bottom Bracket Drop
80mm
80mm
80mm
80mm
80mm
Bottom Bracket Height
271mm
271mm
271mm
271mm
271mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
422.5mm
422.5mm
422.5mm
422.5mm
422.5mm
Front-Center
597mm
600mm
605mm
616mm
634mm
Front-Center Horizontal
591.5mm
595.5mm
599.5mm
610.5mm
622.5mm
Wheelbase
1014mm
1018mm
1022mm
1033mm
1045mm
Fork Offset/Rake
52mm
52mm
47mm
47mm
47mm
Fork Length, Unknown
395mm
395mm
395mm
395mm
395mm
Trail
75.7mm
high
72.4mm
high
74.4mm
high
71.2mm
high
71.2mm
high
Mechanical Trail
70.9mm
68.1mm
70.2mm
67.3mm
67.3mm
Wheel Flop
24.8mm
23.3mm
23.4mm
21.9mm
21.9mm
Standover Height
725mm
750mm
775mm
797mm
816mm
Tire to Pedal Spindle
76mm
170 mm cranks
79mm
170 mm cranks
84mm
170 mm cranks
90mm
175 mm cranks
108mm
175 mm cranks
Pedal Spindle to Ground Clearance
101mm
170 mm cranks
101mm
170 mm cranks
101mm
170 mm cranks
96mm
175 mm cranks
96mm
175 mm cranks

Base Build

50
52
54
56
58
Wheel Size
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
40mm
40mm
40mm
40mm
40mm
Tire Width Max
47mm
47mm
47mm
47mm
47mm
Tire Outer Diameter
702mm
702mm
702mm
702mm
702mm
Bike Length with Tires
1716mm
1720mm
1724mm
1735mm
1747mm
Crank Length
170mm
170mm
170mm
175mm
175mm
Handlebar Width
42mm
44mm
44mm
46mm
46mm
Stem Length
90mm
90mm
90mm
100mm
100mm
Stem Angle
8deg
8deg
8deg
8deg
8deg

Published Sizing Recommendations

Height
158 cm
to
166 cm
166 cm
to
173 cm
173 cm
to
179 cm
178 cm
to
183 cm
182 cm
to
187 cm

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
All-road/Gravel
Source:https://www.posst.bike/oblique