2019 Surly Bikes Big Easy Base

Category
Cargo
Design
Flat Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Somewhat upright stack and reachvs category

Geometry

SM
MD
LG
Stack
573.3mm
601.4mm
629.4mm
Reach
411mm
431mm
448mm
Stack to Reach Ratio
1.39:1
1.4:1
1.4:1
Seat Tube Length, C-T
406mm
432mm
508mm
Top Tube Length, Effective/Horizontal Center
590mm
620mm
645mm
Head Tube Angle
69deg
69deg
69deg
Seat Tube Angle
72.5deg
72.5deg
72.5deg
Head Tube Length
150mm
180mm
210mm
Bottom Bracket Drop
40mm
40mm
40mm
Bottom Bracket Height
303mm
303mm
303mm
Chainstay Length
821mm
821mm
821mm
Chainstay Length Horizontal
820mm
820mm
820mm
Front-Center
661.2mm
693.1mm
720.1mm
Front-Center Horizontal
660mm
692mm
719mm
Wheelbase
1480mm
1512mm
1539mm
Fork Offset/Rake
43mm
43mm
43mm
Fork Length (Axle-To-Crown)
420mm
420mm
420mm
Trail
85.6mm
very high
85.6mm
very high
85.6mm
very high
Mechanical Trail
79.9mm
79.9mm
79.9mm
Wheel Flop
28.6mm
28.6mm
28.6mm
Standover Height
723mm
771mm
821mm
Tire to Pedal Spindle
148.2mm
170 mm cranks
180.1mm
170 mm cranks
207.1mm
170 mm cranks
Pedal Spindle to Ground Clearance
133mm
170 mm cranks
133mm
170 mm cranks
133mm
170 mm cranks

Base Build

SM
MD
LG
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2.5in
2.5in
2.5in
Tire Outer Diameter
686mm
686mm
686mm
Bike Length with Tires
2166mm
2198mm
2225mm

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
Cargo
Source:https://surlybikes.com/bikes/big_easy