Kona Humu

2012 MountainKlunker

Suspension: Rigid
Wheels: 26″
Drivetrain: 1 × 1 42t / 18t
Gear range: 100%
Frame: Aluminum
Brakes: Coaster brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

12 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

Kona 7005 Aluminum Butted Not identified

Suspension

2 parts

Fork
- Kona
Rear shock

None

Drivetrain

7 parts

Bottom bracket

RPM Not identified
Cassette

Lida 18T Not identified
Chain
- KMC
Crankset

42T/Guard Not identified
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

3 parts

Wheels and tires

5 parts

Front hub

CH Not identified
Rear hub

CH Coaster Not identified
Rims
- Shining
A-7X
Spokes

Stainless 14g Not identified
Tires
- CST

Cockpit and contact points

7 parts

Grips

Velo Not identified
Handlebar
- Kona
Headset
- Ritchey
Pedals
- Wellgo
LU-393
Saddle
- Kona
Seatpost
- Kona
Stem
- Kona

Sizes and geometry

3 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 18"

Table

Reach 440mm

Stack 545mm

Wheelbase 1085mm

Head angle 71.0°

Seat angle 72.5°

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 Reach Stack

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	425	440	455
Stackmm	505	545	560
Top tube lengthmm	585	610	635
Seat tube lengthmm	405	455	510
Head tube lengthmm	90	130	150
Head tube angle	71°	71°	71°
Seat tube angle	72.5°	72.5°	72.5°
Chainstay lengthmm	430	430	430
Wheelbasemm	1060	1085	1115
Front centermm	630	660	685
Bottom bracket dropmm	48	48	48
Bottom bracket heightmm	295	295	295
Standover heightmm	715	750	800
Fork rakemm	45	45	45
Trailmm	67	72	62
Stack/reach ratio	1.19	1.24	1.23

Not published by the manufacturer: 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: Aluminum
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 1
Smallest sprocket: 18
Largest sprocket: 18
Lowest gear: 60.7 in
Highest gear: 60.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Coaster brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 2.125″
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 23.2 km/h
Highest gear: 23.2 km/h

Total gear range 100%

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: 60.7–60.7 gear inches

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 2011

Changes since 2011
Specification	2011 Kona Humu	This bicycle Kona Humu
Brakes
Brake type	Mechanical disc	Coaster brake
Other specifications
Travel	Configuration: Rigid	Configuration: RigidRear: Additional specification: Not available: Yes