2021 Specialized Bicycles Fatboy SE

Design
Flat Bar, Rigid, suspension corrected
Frame
Aluminum
Fork
Aluminum
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

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

SE Build

S
M
L
XL
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
4.6in
4.6in
4.6in
4.6in
Tire Outer Diameter
792.7mm
792.7mm
792.7mm
792.7mm
Bike Length with Tires
1880.7mm
1905.7mm
1927.7mm
1953.7mm
Crank Length
170mm
175mm
175mm
175mm
Handlebar Width
750mm
750mm
750mm
750mm
Stem Length
60mm
60mm
70mm
70mm

Stack and Reach vs. Category Trend

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
Hardtail Fatbike
Source:https://www.specialized.com/us/en/fatboy-se/p/171067?color=264341-171067&searchText=99519-7202