2021 Factor Bikes OSTRO VAM Base

	49	52	54	56	58
Stack	503mm	523mm	542mm	565mm	587mm
Reach	370mm	376mm	384mm	392mm	401mm
Stack to Reach Ratio	1.36:1	1.39:1	1.41:1	1.44:1	1.46:1
Seat Tube Length, Unknown	456mm	480mm	502mm	525mm	548mm
Top Tube Length, Effective/Horizontal Center	511mm	527mm	550mm	566mm	582mm
Top Tube Slope	7.4deg	6.9deg	6.7deg	6.6deg	6.4deg
Head Tube Angle	71.7deg	72.5deg	72.5deg	73.3deg	73.3deg
Seat Tube Angle	74.5deg	74deg	73deg	73deg	73deg
Head Tube Length	82.3mm	98.1mm	120.1mm	139.2mm	162.2mm
Bottom Bracket Drop	72mm	72mm	70mm	70mm	70mm
Bottom Bracket Height	264mm	264mm	266mm	266mm	266mm
Chainstay Length	390mm	390mm	395mm	395mm	395mm
Chainstay Length Horizontal	383.3mm	383.3mm	388.8mm	388.8mm	388.8mm
Front-Center	574mm	575mm	587mm	591mm	607mm
Front-Center Horizontal	584.7mm	584.7mm	593.3mm	596.3mm	616.3mm
Wheelbase	968mm	968mm	982mm	985mm	1005mm
Fork Offset/Rake	53mm	48mm	48mm	43mm	43mm
Fork Length, Unknown	373mm	373mm	373mm	373mm	373mm
Trail	55.3mm mid/neutral	55.6mm mid/neutral	55.6mm mid/neutral	55.9mm mid/neutral	55.9mm mid/neutral
Mechanical Trail	52.5mm	53mm	53mm	53.6mm	53.6mm
Wheel Flop	16.5mm	16mm	16mm	15.4mm	15.4mm
Tire to Pedal Spindle	68mm 170 mm cranks	69mm 170 mm cranks	81mm 170 mm cranks	85mm 170 mm cranks	101mm 170 mm cranks
Pedal Spindle to Ground Clearance	94mm 170 mm cranks	94mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks

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://factorbikes.com/models/ostro/

Geometry