2020 Surly Bikes ECR 27+ Base M

Build

650B/27.5 in × 3 in

Insights

Average stack and reach vs trend of rigid mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
603mm
Reach
410.5mm
Stack to Reach Ratio
1.47:1
Seat Tube Length, C-T
457.2mm
Top Tube Length, Effective/Horizontal HT Top
595mm
Top Tube Length, Actual C-C
563.1mm
Top Tube Slope
16.9deg
Head Tube Angle
69deg
Seat Tube Angle
73deg
Head Tube Length
140mm
Bottom Bracket Drop
60mm
Bottom Bracket Height
308.2mm
Chainstay Length
435mm
Chainstay Length Horizontal
430.8mm
Front-Center
667.9mm
Front-Center Horizontal
665.2mm
Wheelbase
1096mm
Fork Offset/Rake
43.2mm
Fork Length (Axle-To-Crown)
447mm
Trail
95.1mm
very high
Mechanical Trail
88.8mm
Wheel Flop
31.8mm
Standover Height
802mm
Tire to Pedal Spindle Distance
With 175 mm cranks
124.7mm
Pedal Spindle to Ground Clearance
With 175 mm cranks
133.2mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
3in
Tire Outer Diameter
736.4mm
Bike Length with Tires
1832.4mm
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