Surly Krampus

Name: Surly Krampus
Brand: Surly

2020 MountainTrail

Last known price: $2,299

Prices shown first for United States
Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 12 30t / 11–51t
Gear range: 464%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

19 of 21 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 4130 Chromoly Steel, Custom double butted externally flaired tubing. Horizontal slotted with derailleur hanger, Surly “Gnot Boost” 142 or 148mm hub spacing compatibility Not identified

Suspension

1 part

Fork
- RockShox 35 Gold RL

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- SunRace 11–51t
Chain
- KMC
Crankset
- Shimano Deore FC-M6100 12 speeds 30t
FC-M6100
Front derailleur

None
Rear derailleur
- Shimano Deore XT RD-M8100 12 speeds
RD-M8100
Shifters
- Shimano Deore XT SL-M8100
SL-M8100

Brakes

3 parts

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips

Velo - lock on Not identified
Handlebar
- Salsa
Headset
- Cane Creek
Saddle
- WTB Volt
Seatpost
- Tranz-X
Stem
- ProMax

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 419mm

Stack 607mm

Wheelbase 1121mm

Head angle 68.4°

Seat angle 72.4°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ 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
Frame
Reachmm	397	419	442	464
Stackmm	597	607	616	626
Top tube lengthmm	587	612	637	662
Seat tube lengthmm	368	419	470	521
Head tube lengthmm	90	100	110	120
Head tube angle	68.4°	68.4°	68.4°	68.4°
Seat tube angle	72.4°	72.4°	72.4°	72.4°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1096	1121	1147	1173
Front centermm	668	693	719	745
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	314	314	314	314
Standover heightmm	776	803	832	861
Fork rakemm	51	51	51	51
Trailmm	92	93	94	94
Stack/reach ratio	1.50	1.45	1.39	1.35
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	750	800	800	800
Stem lengthmm	70	70	70	80
Stem angle	6°	6°	6°	6°

Not published by the manufacturer: 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: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 51
Lowest gear: 17.1 in
Highest gear: 79.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire clearance: Maximum tire width: 3″
Tire width: 2.6″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,348 bicycles with this information
Coverage: 93.8% of the class

Lowest gear

17.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Highest gear

79.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Shifting

Mechanical

55 of 1,437 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,437 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.5 km/h
Highest gear: 30.3 km/h

Total gear range 464%

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: 17.1–79.1 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2020
Lowest gear: 1217 bicycles with this information, 84.6% of the class
Highest gear: 1217 bicycles with this information, 84.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Changes since 2019

Changes since 2019
Specification	2019 Surly Krampus	This bicycle Surly Krampus
Suspension
Suspension configuration	Rigid	Hardtail
Front travel	Not informed	120 mm
Drivetrain
Rear sprockets	11	12
Largest sprocket	42	51
Lowest gear	20.7 in	17.1 in
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Suspension	Rigid	Hardtail
Tire width	3″	2.6″
Fork spring	Not informed	Air