2023 Surly Bikes Big Dummy Base LG

Build

26 in × 2.5 in

Insights

Somewhat upright stack and reach vs trend of cargo bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
627.4mm
Reach
447.2mm
Stack to Reach Ratio
1.4:1
Seat Tube Length, C-TTT
508mm
Top Tube Length, Effective/Horizontal HT Top
645mm
Top Tube Slope
11.6deg
Head Tube Angle
70deg
Seat Tube Angle
72.5deg
Head Tube Length
210mm
Bottom Bracket Drop
40mm
Bottom Bracket Height
303mm
Chainstay Length
821mm
Chainstay Length Horizontal
820mm
Front-Center
707.9mm
Front-Center Horizontal
706.8mm
Wheelbase
1526.8mm
Fork Offset/Rake
43mm
Fork Length (Axle-To-Crown)
417.8mm
Trail
79.1mm
high
Mechanical Trail
74.3mm
Wheel Flop
25.4mm
Standover Height
823mm
Tire to Pedal Spindle Distance
With 175 mm cranks
189.9mm
Pedal Spindle to Ground Clearance
With 175 mm cranks
128mm

Base Build

Wheel Size
26 inch (559mm BSD)
Tire Width
2.5in
Tire Outer Diameter
686mm
Bike Length with Tires
2212.8mm
Crank Length
175mm
Handlebar Width
735mm
Stem Length
80mm
Stem Angle
7deg
Suspension Type
Rigid, suspension corrected
Bar Type
Flat Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc

Published Sizing Recommendations

Height
148 ft 2 in
to
163 ft 0 in
Source:https://surlybikes.com/bikes/big_dummy#spec-geo