Compare: 2025 Factor Bikes OSTRO GRAVEL Carbon 49 vs 2026 Winspace Cycle Co M6 Base S

Insights

Average stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of Factor Bikes OSTRO GRAVEL

Average stack and reach vs trend of performance road bikes

Design deviates from other sizes of Winspace Cycle Co M6

Stack	515mm	521mm +6mm
Reach	377mm	374mm -3mm
Stack to Reach Ratio	1.37:1	1.39:1
Seat Tube Length, C-T	450mm	—
Seat Tube Length, Effective Unknown	—	460mm
Top Tube Length, Effective/Horizontal Unknown	—	514mm
Top Tube Slope	9.3deg	—
Head Tube Angle	71.2deg	71.3deg +0.1deg
Seat Tube Angle	74.5deg	74.9deg +0.4deg
Head Tube Length	—	120mm
Bottom Bracket Drop	76mm	72mm -4mm
Bottom Bracket Height	275mm	271mm -4mm
Chainstay Length	420mm	410mm -10mm
Chainstay Length Horizontal	413.1mm	403.6mm -9.5mm
Front-Center	590.8mm	581.8mm -9mm
Front-Center Horizontal	585.9mm	577.4mm -8.5mm
Wheelbase	999mm	981mm -18mm
Fork Offset/Rake	56mm	49mm -7mm
Fork Length, Unknown	—	369mm
Trail	60.3mm mid/neutral	64.4mm +4.1mm mid/neutral
Mechanical Trail	57.1mm	61mm +3.9mm
Wheel Flop	18.4mm	19.6mm +1.2mm
Standover Height	750mm	752mm +2mm
Tire to Pedal Spindle	69.8mm 170 mm cranks	68.8mm -1mm 170 mm cranks
Pedal Spindle to Ground Clearance	105mm 170 mm cranks	101mm -4mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	32mm -8mm
Tire Outer Diameter	702mm	686mm -16mm
Bike Length with Tires	1701mm	1667mm -34mm
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	https://factorbikes.com/bikes/ostro-gravel	https://cdn.shopify.com/s/files/1/0912/6101/0215/files/2_M6_catalog_-_260224_2__04.png?v=1772209825
Brand	Factor Bikes	Winspace Cycle Co
Bike	2025 OSTRO GRAVEL Carbon	2026 M6 Base
Size	49	S
Category	Progressive Gravel	Performance Road