Compare: 2025 Factor Bikes OSTRO GRAVEL Carbon 54 vs 2026 Mondince FM336 Base M

Insights

Average stack and reach vs trend of progressive gravel bikes

Design deviates from other sizes of Factor Bikes OSTRO GRAVEL

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

Stack	555mm	570mm +15mm
Reach	394mm	392mm -2mm
Stack to Reach Ratio	1.41:1	1.45:1
Seat Tube Length, C-T	483mm	—
Seat Tube Length, Unknown	—	480mm
Top Tube Length, Effective/Horizontal Unknown	—	559mm
Top Tube Slope	9.8deg	11.7deg +1.9deg
Head Tube Angle	72.2deg	71.5deg -0.7deg
Seat Tube Angle	74deg	73.7deg -0.3deg
Head Tube Length	—	138mm
Bottom Bracket Drop	74mm	80mm +6mm
Bottom Bracket Height	277mm	271mm -6mm
Chainstay Length	420mm	426mm +6mm
Chainstay Length Horizontal	413.4mm	418.4mm +5mm
Front-Center	605.1mm	618.8mm +13.7mm
Front-Center Horizontal	600.6mm	613.6mm +13mm
Wheelbase	1014mm	1032mm +18mm
Fork Offset/Rake	50mm	55mm +5mm
Fork Length, Unknown	—	397mm
Trail	60.2mm mid/neutral	59.5mm -0.7mm mid/neutral
Mechanical Trail	57.3mm	56.4mm -0.9mm
Wheel Flop	17.5mm	17.9mm +0.4mm
Standover Height	786mm	—
Tire to Pedal Spindle	84.1mm 170 mm cranks	97.8mm +13.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	107mm 170 mm cranks	101mm -6mm 170 mm cranks

Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	40mm +0mm
Tire Outer Diameter	702mm	702mm +0mm
Bike Length with Tires	1716mm	1734mm +18mm
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://mondincecycle.com/product/2026-toray-t800-and-t1000-high-stiffness-storage-space-full-carbon-gravel-bike-frame-fm336
Brand	Factor Bikes	Mondince
Bike	2025 OSTRO GRAVEL Carbon	2026 FM336 Base
Size	54	M
Category	Progressive Gravel	All-road/Gravel