2026 Factor Bikes OSTRO VAM Base

	45	49	52	54	56	58	61
Stack	502mm	503mm	523mm	542mm	565mm	587mm	611mm
Reach	360mm	370mm	376mm	384mm	392mm	401mm	409mm
Stack to Reach Ratio	1.39:1	1.36:1	1.39:1	1.41:1	1.44:1	1.46:1	1.49:1
Seat Tube Length, Unknown	432mm	454mm	483mm	502mm	524mm	531mm	554mm
Top Tube Slope	10.3deg	7.6deg	6.6deg	6.5deg	6.6deg	8deg	8deg
Head Tube Angle	71.1deg	71.1deg	72.5deg	72.5deg	73.3deg	73.3deg	73.3deg
Seat Tube Angle	73.5deg	74.5deg	74deg	74deg	73.5deg	73.5deg	73.5deg
Bottom Bracket Drop	72mm	72mm	72mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	269mm	269mm	269mm	271mm	271mm	271mm	271mm
Chainstay Length	405mm	405mm	405mm	405mm	405mm	408mm	410mm
Chainstay Length Horizontal	398.6mm	398.6mm	398.6mm	398.9mm	398.9mm	402mm	404mm
Front-Center	576mm	575mm	577mm	590.3mm	592.3mm	608.1mm	622mm
Front-Center Horizontal	571.5mm	570.5mm	572.5mm	586.1mm	588.1mm	604.1mm	618mm
Wheelbase	970mm	969mm	971mm	985mm	987mm	1006mm	1022mm
Fork Offset/Rake	57mm	53mm	48mm	48mm	43mm	43mm	43mm
Trail	56.5mm mid/neutral	60.7mm mid/neutral	57.2mm mid/neutral	57.2mm mid/neutral	57.4mm mid/neutral	57.4mm mid/neutral	57.4mm mid/neutral
Mechanical Trail	53.5mm	57.5mm	54.5mm	54.5mm	55mm	55mm	55mm
Wheel Flop	17.3mm	18.6mm	16.4mm	16.4mm	15.8mm	15.8mm	15.8mm
Standover Height	726mm	737mm	762mm	781mm	804mm	817mm	840mm
Tire to Pedal Spindle	65mm 170 mm cranks	64mm 170 mm cranks	66mm 170 mm cranks	79.3mm 170 mm cranks	81.3mm 170 mm cranks	97.1mm 170 mm cranks	111mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 170 mm cranks	101mm 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.

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Source:https://factorbikes.com/bikes/ostro-vam

Geometry