2023 POSST Oblique Base

	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

Published Sizing Recommendations

Height

158 cm

166 cm

173 cm

179 cm

178 cm

183 cm

182 cm

187 cm

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.

Category Trend

Source:https://www.posst.bike/oblique