Surly ECR

Name: Surly ECR
Brand: Surly

2020 RoadGravel

Last known price: $1,900

Prices shown first for United States
Suspension: Rigid
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Frame: Steel
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
MD 171–182
LG 179–189
XL 185–195

Components

16 of 20 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Surly ECR, 100% Surly 4130 CroMoly steel. Surly ECR, 100% Surly 4130 CroMoly steel. ED coated. Double-butted main triangle. TIG-welded Not identified

Suspension

1 part

Fork
- Surly

Drivetrain

7 parts

Brakes

2 parts

Brake levers
- SRAM FR-5
FR-5
Brakes
- Avid

Wheels and tires

4 parts

Front hub

OE 32h QR Not identified
Rear hub

OE 32h Thru axle Not identified
Rims
- WTB KOM Tough i40
Tires
- Surly

Cockpit and contact points

6 parts

Grips

Velo Lock-On Not identified
Handlebar
- Surly
Headset
- Cane Creek
Saddle
- WTB Volt
Seatpost
- ProMax
Stem
- ProMax

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 411mm

Stack 603mm

Wheelbase 1096mm

Head angle 69.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	385	398	410.5	408	420.5	433
Stackmm	556	579.5	603	609.5	633	656.5
Top tube lengthmm	555	575	595	600	620	640
Seat tube lengthmm	346.4	406.4	457.2	457.2	507.9	558.7
Head tube lengthmm	90	115	140	100	125	150
Head tube angle	69°	69°	69°	70°	70°	70°
Seat tube angle	73°	73°	73°	72.5°	72.5°	72.5°
Chainstay lengthmm	435	435	435	451	451	451
Wheelbasemm	1052.3	1074	1096	1090	1111	1132.5
Front centermm	624	646	668	651	672	693
Bottom bracket dropmm	60	60	60	80	80	80
Standover heightmm	726	766	802	805	840	875
Fork rakemm	43.2	43.2	43.2	43	43	43
Trailmm	81	81	81	81	81	81
Stack/reach ratio	1.44	1.46	1.47	1.49	1.51	1.52
Suspension and parts
Crank lengthmm	170	170	175	175	175	175
Handlebar widthmm	685	685	735	735	735	735
Stem lengthmm	60	60	70	70	70	80
Stem angle	6°	6°	6°	6°	6°	6°

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 17.4 in
Highest gear: 79.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire clearance: Maximum tire width: 3″
Tire width: 3″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

17.4 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2020
Sample: 640 bicycles with this information
Coverage: 82.6% of the class

Highest gear

79.1 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2020
Sample: 640 bicycles with this information
Coverage: 82.6% of the class

Shifting

Mechanical

123 of 774 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2020
Sample: 774 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.7 km/h
Highest gear: 30.3 km/h

Total gear range 455%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 17.4–79.1 gear inches
Class reference (p10–p90): 24.3–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2020
Lowest gear: 640 bicycles with this information, 82.6% of the class
Highest gear: 640 bicycles with this information, 82.6% of the class