Compare: 2023 Bigrock Sohtea Base XS 49 vs 2026 Factor Bikes OSTRO VAM Base 45

Insights

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Bigrock Sohtea

Somewhat upright stack and reach vs trend of performance road bikes

Design deviates from other sizes of Factor Bikes OSTRO VAM

Stack	513mm	502mm -11mm
Reach	375mm	360mm -15mm
Stack to Reach Ratio	1.37:1	1.39:1
Seat Tube Length, C-T	431mm	—
Seat Tube Length, Unknown	—	432mm
Top Tube Length, Effective/Horizontal Center	508mm	—
Top Tube Slope	11.2deg	10.3deg -0.9deg
Head Tube Angle	71.75deg	71.1deg -0.65deg
Seat Tube Angle	75.5deg	73.5deg -2deg
Head Tube Length	109mm	—
Bottom Bracket Drop	74mm	72mm -2mm
Bottom Bracket Height	267mm	269mm +2mm
Chainstay Length	410mm	405mm -5mm
Chainstay Length Horizontal	403.3mm	398.6mm -4.7mm
Front-Center	574mm	576mm +2mm
Front-Center Horizontal	569.7mm	571.5mm +1.8mm
Wheelbase	973mm	970mm -3mm
Fork Offset/Rake	47mm	57mm +10mm
Fork Length, Unknown	369mm	—
Trail	63mm mid/neutral	56.5mm -6.5mm mid/neutral
Mechanical Trail	59.8mm	53.5mm -6.3mm
Wheel Flop	18.7mm	17.3mm -1.4mm
Standover Height	—	726mm
Tire to Pedal Spindle	63mm 170 mm cranks	65mm +2mm 170 mm cranks
Pedal Spindle to Ground Clearance	97mm 170 mm cranks	99mm +2mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	30mm	30mm +0mm
Tire Outer Diameter	682mm	682mm +0mm
Bike Length with Tires	1655mm	1652mm -3mm
Suspension Type	Rigid, non-suspension corrected	Rigid, non-suspension corrected
Bar Type	Drop Bar	Drop Bar
Frame Material	Carbon/Composite	Carbon/Composite
Fork Material	Carbon/Composite	Carbon/Composite
Brake Type	Disc	Disc

Actions	Collection I've Ridden	Collection I've Ridden
Source	http://43.136.68.97:85/productsDetails/?id=64712150b2601e7659887d38&category=	https://factorbikes.com/bikes/ostro-vam
Brand	Bigrock	Factor Bikes
Bike	2023 Sohtea Base	2026 OSTRO VAM Base
Size	XS 49	45
Category	Performance Road	Performance Road