Compare: 2025 Factor Bikes OSTRO GRAVEL Carbon 58 vs 2025 Elves MORI AEROX 59

Insights

Somewhat upright stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of Factor Bikes OSTRO GRAVEL

Very aggressive stack and reach vs trend of all-road/gravel bikes

Design deviates from other sizes of Elves MORI

Stack	605mm	588mm -17mm
Reach	412mm	415mm +3mm
Stack to Reach Ratio	1.47:1	1.42:1
Seat Tube Length, C-T	523mm	—
Seat Tube Length, Unknown	—	525mm
Top Tube Length, Effective/Horizontal Unknown	—	595mm
Top Tube Slope	10.5deg	8.6deg -1.9deg
Head Tube Angle	72.3deg	71.5deg -0.8deg
Seat Tube Angle	73.5deg	73deg -0.5deg
Head Tube Length	—	165mm
Bottom Bracket Drop	74mm	74mm +0mm
Bottom Bracket Height	277mm	265mm -12mm
Chainstay Length	425mm	430mm +5mm
Chainstay Length Horizontal	418.5mm	423.6mm +5.1mm
Front-Center	632.8mm	50mm -582.8mm
Front-Center Horizontal	628.5mm	643.4mm +14.9mm
Wheelbase	1047mm	1067mm +20mm
Fork Offset/Rake	50mm	56mm +6mm
Trail	59.5mm mid/neutral	54.4mm -5.1mm mid/neutral
Mechanical Trail	56.7mm	51.6mm -5.1mm
Wheel Flop	17.2mm	16.4mm -0.8mm
Standover Height	820mm	817mm -3mm
Tire to Pedal Spindle	111.8mm 170 mm cranks	-459mm -570.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	107mm 170 mm cranks	95mm -12mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	28mm -12mm
Tire Outer Diameter	702mm	678mm -24mm
Bike Length with Tires	1749mm	1745mm -4mm
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://usa.elvesbike.com/products/elves-mori-aerox-carbon-aero-gravel-framesets?VariantsId=12855
Brand	Factor Bikes	Elves
Bike	2025 OSTRO GRAVEL Carbon	2025 MORI AEROX
Size	58	59
Category	Progressive Gravel	All-road/Gravel