Surly Grappler

Name: Surly Grappler
Brand: Surly

2026 RoadTouring Manufacturer page

Last known price: $1,999

Prices shown first for United States
Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 10 32t / 11–48t
Gear range: 436%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 142–151
SM 152–164
MD 165–174
LG 175–184
XL Not informed

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 Grappler - 4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, ED coated Not identified

Suspension

1 part

Fork
- Surly

Drivetrain

7 parts

Bottom bracket

73mm BSA, threaded Not identified
Cassette
- microSHIFT Advent X 11–48t
Chain
- KMC X10 10 speeds
Crankset
- Samox 32t
Front derailleur

None
Rear derailleur
- microSHIFT Advent X
Shifters
- microSHIFT Advent X

Brakes

3 parts

Brake levers
- microSHIFT
Brakes
- Tektro
Disc rotors

Disc - 51mm I.S. (203mm max rotor) Not identified

Wheels and tires

4 parts

Cockpit and contact points

5 parts

Handlebar
- Salsa
Headset
- Cane Creek Forty
Saddle
- WTB Volt
Seatpost

Ø30.9mm Not identified
Stem
- ProMax
DA-296

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 420mm

Stack 623mm

Wheelbase 1109mm

Head angle 69.5°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 650b wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	381	405	420	444	458
Stackmm	585	604	623	641	660
Top tube lengthmm	560	590	610	640	660
Seat tube lengthmm	316	386	437.2	488	539
Head tube lengthmm	160	180	200	220	240
Head tube angle	69.5°	69.5°	69.5°	69.5°	69.5°
Seat tube angle	73°	73°	73°	73°	73°
Chainstay lengthmm	425	425	425	425	425
Wheelbasemm	1057	1088	1109	1140	1162
Front centermm	637	668	689	720	742
Bottom bracket dropmm	50	50	50	50	50
Standover heightmm	719	762	795	829	862
Fork rakemm	50	50	50	50	50
Trailmm	64	65	66	65	65
Stack/reach ratio	1.54	1.49	1.48	1.44	1.44
Suspension and parts
Crank lengthmm	170	170	175	175	175
Handlebar widthmm	400	420	440	460	480
Stem lengthmm	60	60	60	60	60

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, 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: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 48
Lowest gear: 18.3 in
Highest gear: 80.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 650b

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 30.6 km/h

Total gear range 436%

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.