Compare: 2025 Winspace Cycle Co C5 Aero Base L vs 2025 Factor Bikes OSTRO GRAVEL Carbon 54

Insights

Somewhat aggressive stack and reach vs trend of endurance road bikes

Design deviates from other sizes of Winspace Cycle Co C5 Aero

Average stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of Factor Bikes OSTRO GRAVEL

Stack	557mm	555mm -2mm
Reach	387mm	394mm +7mm
Stack to Reach Ratio	1.44:1	1.41:1
Seat Tube Length, C-T	—	483mm
Seat Tube Length, Unknown	515mm	—
Top Tube Length, Actual C-C	552mm	—
Top Tube Slope	6.8deg	9.8deg +3deg
Head Tube Angle	72.3deg	72.2deg -0.1deg
Seat Tube Angle	73.5deg	74deg +0.5deg
Head Tube Length	150mm	—
Bottom Bracket Drop	72mm	74mm +2mm
Bottom Bracket Height	271mm	277mm +6mm
Chainstay Length	412mm	420mm +8mm
Chainstay Length Horizontal	405.7mm	413.4mm +7.7mm
Front-Center	587.8mm	605.1mm +17.3mm
Front-Center Horizontal	583.3mm	600.6mm +17.3mm
Wheelbase	989mm	1014mm +25mm
Fork Offset/Rake	40mm	50mm +10mm
Fork Length (On-Axis)	371mm	—
Trail	67.5mm high	60.2mm -7.3mm mid/neutral
Mechanical Trail	64.3mm	57.3mm -7mm
Wheel Flop	19.5mm	17.5mm -2mm
Standover Height	790mm	786mm -4mm
Tire to Pedal Spindle	74.8mm 170 mm cranks	84.1mm +9.3mm 170 mm cranks
Pedal Spindle to Ground Clearance	101mm 170 mm cranks	107mm +6mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	32mm	40mm +8mm
Tire Outer Diameter	686mm	702mm +16mm
Bike Length with Tires	1675mm	1716mm +41mm
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://www.winspace.cc/product/c5-aero/?v=0b3b97fa6688	https://factorbikes.com/bikes/ostro-gravel
Brand	Winspace Cycle Co	Factor Bikes
Bike	2025 C5 Aero Base	2025 OSTRO GRAVEL Carbon
Size	L	54
Category	Endurance Road	Progressive Gravel