2022 Why Cycles Big Iron Base

Design
Flat Bar, Rigid, suspension corrected
Frame
Titanium
Fork
Carbon/Composite
Features
Disc brake, Single-speed capable
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
611mm
622mm
627mm
637mm
Reach
427mm
442mm
468mm
484mm
Stack to Reach Ratio
1.43:1
1.41:1
1.34:1
1.32:1
Seat Tube Length, Unknown
355mm
407mm
457mm
492mm
Top Tube Length, Effective/Horizontal HT Top
574mm
614mm
635mm
660mm
Top Tube Slope
27.2deg
22.5deg
17.5deg
14.9deg
Head Tube Angle
68.2deg
68.2deg
68.2deg
68.2deg
Seat Tube Angle
74deg
73deg
73deg
73deg
Head Tube Length
116mm
127mm
132mm
143mm
Bottom Bracket Drop
64mm
64mm
64mm
64mm
Bottom Bracket Height
342.3mm
342.3mm
342.3mm
342.3mm
Chainstay Length
445mm
445mm
445mm
445mm
Chainstay Length Max
460mm
460mm
460mm
460mm
Chainstay Length Horizontal
440.4mm
440.4mm
440.4mm
440.4mm
Chainstay Length Horizontal Max
455.5mm
455.5mm
455.5mm
455.5mm
Front-Center
684.6mm
711.5mm
734.4mm
757.3mm
Front-Center Horizontal
681.6mm
708.6mm
731.6mm
754.6mm
Wheelbase
1122mm
1149mm
1172mm
1195mm
Wheelbase Max
1137.2mm
1164.2mm
1187.2mm
1210.2mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
Fork Length (Axle-To-Crown)
490mm
490mm
490mm
490mm
Trail
107.6mm
very high
107.6mm
very high
107.6mm
very high
107.6mm
very high
Mechanical Trail
99.9mm
99.9mm
99.9mm
99.9mm
Wheel Flop
37.1mm
37.1mm
37.1mm
37.1mm
Tire to Pedal Spindle
108.3mm
170 mm cranks
135.2mm
170 mm cranks
158.1mm
170 mm cranks
181mm
170 mm cranks
Pedal Spindle to Ground Clearance
172.3mm
170 mm cranks
172.3mm
170 mm cranks
172.3mm
170 mm cranks
172.3mm
170 mm cranks

Base Build

S
M
L
XL
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
4.5in
4.5in
4.5in
4.5in
Tire Outer Diameter
812.6mm
812.6mm
812.6mm
812.6mm
Bike Length with Tires
1934.6mm
1961.6mm
1984.6mm
2007.6mm

Published Sizing Recommendations

Height
5 ft 1 in
to
5 ft 6 in
5 ft 5 in
to
5 ft 10 in
5 ft 9 in
to
6 ft 2 in
6 ft 1 in
to
6 ft 6 in

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
Rigid Fatbike
Source:https://www.whycycles.com/our-bikes/big-iron-fat-bike/