2021 Surly Bikes ECR 29+ Base L

Build

700C/29 in × 3 in

Insights

Somewhat upright stack and reach vs trend of rigid mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
633mm
Reach
420.5mm
Stack to Reach Ratio
1.51:1
Seat Tube Length, C-T
507.9mm
Top Tube Length, Effective/Horizontal HT Top
620mm
Top Tube Length, Actual C-C
580mm
Top Tube Slope
14.5deg
Head Tube Angle
70deg
Seat Tube Angle
72.5deg
Head Tube Length
125mm
Bottom Bracket Drop
80mm
Bottom Bracket Height
307.2mm
Chainstay Length
451mm
Chainstay Length Horizontal
443.9mm
Front-Center
671.9mm
Front-Center Horizontal
667.2mm
Wheelbase
1111mm
Fork Offset/Rake
43mm
Fork Length (Axle-To-Crown)
468mm
Trail
95.2mm
very high
Mechanical Trail
89.4mm
Wheel Flop
30.6mm
Standover Height
840mm
Tire to Pedal Spindle Distance
With 175 mm cranks
109.7mm
Pedal Spindle to Ground Clearance
With 175 mm cranks
132.2mm

Base Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
3in
Tire Outer Diameter
774.4mm
Bike Length with Tires
1885.4mm
Crank Length
175mm
Handlebar Width
735mm
Stem Length
70mm
Stem Angle
6deg
Suspension Type
Rigid, non-suspension corrected
Bar Type
Flat Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc
Source:https://surlybikes.com/bikes/ecr