2025 Winow Sport FM237 Base

	45	47	49	52	54	56	58
Stack	500mm	505.5mm	528mm	546mm	565mm	580mm	594mm
Reach	371mm	380mm	385.5mm	388mm	394mm	408mm	423.5mm
Stack to Reach Ratio	1.35:1	1.33:1	1.37:1	1.41:1	1.43:1	1.42:1	1.4:1
Seat Tube Length, Unknown	450mm	470mm	490mm	520mm	540mm	560mm	580mm
Top Tube Length, Effective/Horizontal Center	505mm	520mm	535mm	550mm	567mm	585mm	605mm
Top Tube Slope	7.6deg	5.9deg	6.3deg	5.1deg	5deg	4.5deg	3.8deg
Head Tube Angle	71.25deg	71.5deg	72.25deg	72.25deg	72.25deg	73deg	73deg
Seat Tube Angle	75deg	74.5deg	74deg	73.5deg	73deg	73deg	73deg
Head Tube Length	110mm	115mm	125mm	145mm	165mm	180mm	195mm
Bottom Bracket Drop	71.5mm	71.5mm	71.5mm	71.5mm	71.5mm	69mm	69mm
Bottom Bracket Height	267.5mm	267.5mm	267.5mm	267.5mm	267.5mm	270mm	270mm
Chainstay Length	405mm	405mm	405mm	405mm	407mm	407mm	407mm
Chainstay Length Horizontal	398.6mm	398.6mm	398.6mm	398.6mm	400.7mm	401.1mm	401.1mm
Front-Center	566.5mm	575mm	581.1mm	590mm	602mm	613mm	633mm
Front-Center Horizontal	562mm	570.5mm	576.7mm	585.7mm	597.7mm	609.1mm	629.2mm
Wheelbase	960.6mm	969.2mm	975.3mm	984.3mm	998.4mm	1010.2mm	1030.3mm
Fork Offset/Rake	43mm	43mm	43mm	43mm	43mm	43mm	43mm
Trail	69.7mm high	68.1mm high	63.4mm mid/neutral	63.4mm mid/neutral	63.4mm mid/neutral	58.7mm mid/neutral	58.7mm mid/neutral
Mechanical Trail	66mm	64.6mm	60.4mm	60.4mm	60.4mm	56.1mm	56.1mm
Wheel Flop	21.2mm	20.5mm	18.4mm	18.4mm	18.4mm	16.4mm	16.4mm
Tire to Pedal Spindle	57.5mm 170 mm cranks	66mm 170 mm cranks	72.1mm 170 mm cranks	81mm 170 mm cranks	93mm 170 mm cranks	104mm 170 mm cranks	124mm 170 mm cranks
Pedal Spindle to Ground Clearance	97.5mm 170 mm cranks	97.5mm 170 mm cranks	97.5mm 170 mm cranks	97.5mm 170 mm cranks	97.5mm 170 mm cranks	100mm 170 mm cranks	100mm 170 mm cranks

	45	47	49	52	54	56	58
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1638.6mm	1647.2mm	1653.3mm	1662.3mm	1676.4mm	1688.2mm	1708.3mm

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale

Category Trend

Performance Road

Source:https://www.winowsports.com/product/products-4-6.html

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2025 Winow Sport FM237 Base

Geometry

Base Build

Stack and Reach vs. Category Trend