2021 Specialized Bicycles Fatboy SE

	S	M	L	XL
Stack	602mm	602mm	617mm	632mm
Reach	395mm	420mm	437mm	458mm
Stack to Reach Ratio	1.52:1	1.43:1	1.41:1	1.38:1
Seat Tube Length, Unknown	394mm	434mm	470mm	520mm
Top Tube Length, Effective/Horizontal Center	579mm	604mm	626mm	651mm
Top Tube Slope	23.8deg	18.9deg	16.3deg	12.5deg
Head Tube Angle	71deg	71deg	71deg	71deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	94mm	94mm	110mm	125mm
Bottom Bracket Drop	60mm	60mm	60mm	60mm
Bottom Bracket Height	336.3mm	336.3mm	336.3mm	336.3mm
Chainstay Length	455mm	455mm	455mm	455mm
Chainstay Length Horizontal	451mm	451mm	451mm	451mm
Front-Center	640mm	665mm	687mm	713mm
Front-Center Horizontal	637mm	662mm	684mm	710mm
Wheelbase	1088mm	1113mm	1135mm	1161mm
Fork Offset/Rake	47mm	47mm	47mm	47mm
Fork Length, Unknown	496mm	496mm	496mm	496mm
Trail	86.8mm very high	86.8mm very high	86.8mm very high	86.8mm very high
Mechanical Trail	82mm	82mm	82mm	82mm
Wheel Flop	26.7mm	26.7mm	26.7mm	26.7mm
Standover Height	765mm	786mm	813mm	847mm
Tire to Pedal Spindle	73.7mm 170 mm cranks	93.7mm 175 mm cranks	115.7mm 175 mm cranks	141.7mm 175 mm cranks
Pedal Spindle to Ground Clearance	166.3mm 170 mm cranks	161.3mm 175 mm cranks	161.3mm 175 mm cranks	161.3mm 175 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:https://www.specialized.com/us/en/fatboy-se/p/171067?color=264341-171067&searchText=99519-7202

Geometry