2021 Surly Bikes ECR 29+ Base XL

Build

700C/29 in × 3 in

Insights

Very upright stack and reach vs trend of rigid mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
656.5mm
Reach
433mm
Stack to Reach Ratio
1.52:1
Seat Tube Length, C-T
558.7mm
Top Tube Length, Effective/Horizontal HT Top
640mm
Top Tube Length, Actual C-C
600mm
Top Tube Slope
11.6deg
Head Tube Angle
70deg
Seat Tube Angle
72.5deg
Head Tube Length
150mm
Bottom Bracket Drop
80mm
Bottom Bracket Height
307.2mm
Chainstay Length
451mm
Chainstay Length Horizontal
443.9mm
Front-Center
693.3mm
Front-Center Horizontal
688.7mm
Wheelbase
1132.5mm
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
875mm
Tire to Pedal Spindle Distance
With 175 mm cranks
131.1mm
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
1906.9mm
Crank Length
175mm
Handlebar Width
735mm
Stem Length
80mm
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