Surly Troll

Name: Surly Troll
Brand: Surly

2017 RoadTouring

Suspension: Rigid
Wheels: 26″
Drivetrain: 3 × 10 26–48t / 11–36t
Gear range: 604%
Frame: Steel
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

15 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

Horizontal slotted with derailleur hanger; Surly “Gnot Boost” 135, 142, and/or 148mm hub spacing compatibility Not identified

Suspension

1 part

Fork

420mm axle-to-crown x 43mm offset, tapered and butted straight blade, , 4130 CroMoly. 51mm I.S. disc mount Not identified

Drivetrain

7 parts

Bottom bracket

73mm shell width, threaded standard English (1.37˝ x 24t) Not identified
Cassette
- Shimano CS-HG50 11–36t
CS-HG50HG-50
Chain
- KMC X10 10 speeds
Crankset
- Shimano 26/36/48t
Front derailleur
- Shimano FD-M611-D
FD-M611
Rear derailleur
- Shimano Deore RD-T610
RD-T610
Shifters
- microSHIFT Thumb Shifters MTB 2/3×10 10 speeds
SL-M10

Brakes

2 parts

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

Wheels and tires

4 parts

Cockpit and contact points

5 parts

Handlebar

Jones Loop 710mm Not identified
Headset
- Cane Creek Forty
Saddle
- WTB Volt
Seatpost
- Kalloy
SP-342
Stem

H.L. 31.8 Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 393mm

Stack 561mm

Wheelbase 1041mm

Head angle 71.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	371	393	415	431
Stackmm	551	561	570	585
Top tube lengthmm	545	570	595	615
Seat tube lengthmm	336	406	457	508
Head tube lengthmm	125	135	145	160
Head tube angle	71°	71°	71°	71°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	425	425	425	425
Wheelbasemm	1016	1041	1066	1086
Front centermm	594	619	644	664
Bottom bracket dropmm	40	40	40	40
Standover heightmm	720	749	778	809
Fork rakemm	43	43	43	43
Trailmm	59	59	59	60
Stack/reach ratio	1.49	1.43	1.37	1.36

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, 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: 3
Smallest chainring: 26
Largest chainring: 48
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 18.8 in
Highest gear: 113.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 3″
Tire width: 2.5″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 43.5 km/h

Total gear range 604%

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.