2021 Winow Sport FS831 AM Base

	16	17.5	19	21
Stack	610mm	619mm	637mm	660mm
Reach	453mm	473mm	493mm	518mm
Stack to Reach Ratio	1.35:1	1.31:1	1.29:1	1.27:1
Seat Tube Length, C-T	405mm	445mm	482mm	532mm
Top Tube Length, Effective/Horizontal HT Top	594mm	618mm	645mm	679mm
Top Tube Slope	21.6deg	17.9deg	15.5deg	12.5deg
Head Tube Angle	65.5deg	65.5deg	65.5deg	65.5deg
Seat Tube Angle	77deg	76.8deg	76.6deg	76.3deg
Head Tube Length	100mm	110mm	130mm	155mm
Bottom Bracket Drop	29mm	29mm	29mm	29mm
Bottom Bracket Height	343mm	343mm	343mm	343mm
Chainstay Length	433mm	433mm	433mm	433mm
Chainstay Length Horizontal	432mm	432mm	432mm	432mm
Front-Center	774mm	798mm	827mm	862mm
Front-Center Horizontal	775mm	799mm	828mm	869mm
Wheelbase	1207mm	1231mm	1260mm	1301mm
Fork Offset/Rake	52.1mm	52mm	52.7mm	57.7mm
Trail	112.3mm very high	112.4mm very high	111.6mm very high	106.1mm very high
Mechanical Trail	102.2mm	102.3mm	101.6mm	96.6mm
Wheel Flop	42.4mm	42.4mm	42.1mm	40mm
Tire to Pedal Spindle	232mm 170 mm cranks	256mm 170 mm cranks	285mm 170 mm cranks	320mm 170 mm cranks
Pedal Spindle to Ground Clearance	173mm 170 mm cranks	173mm 170 mm cranks	173mm 170 mm cranks	173mm 170 mm cranks

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.

Category Trend

Source:http://www.winowsports.com/product/dual-suspension-150mm-travel-AM-Frame.html

Geometry