Kona Humuhumu

2015 MountainKlunker

Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 1 36t / 18t
Gear range: 100%
Frame: Steel
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

17 of 22 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 Cromoly Butted Not identified

Suspension

2 parts

Fork
- Kona
Rear shock

None

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Formula
Chain
- KMC
Crankset

36t Not identified
Front derailleur

None
Rear derailleur

None
Shifters

n Not identified

Brakes

3 parts

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula
Rims
- WTB
Spokes

Sandvik 14g Not identified
Tires
- Schwalbe

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset

TH ZST No.10TH ZST No.10 Not identified
Pedals
- Wellgo
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 429mm

Stack 593mm

Wheelbase 1109mm

Head angle 70.0°

Seat angle 73.0°

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 Reach Stack

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	408	429	448
Stackmm	574	593	612
Top tube lengthmm	584	610	635
Seat tube lengthmm	406	457	508
Head tube lengthmm	110	130	150
Head tube angle	70°	70°	70°
Seat tube angle	73°	73°	73°
Chainstay lengthmm	450	450	450
Wheelbasemm	1082	1109	1136
Front centermm	643	670	696
Bottom bracket dropmm	74	74	74
Bottom bracket heightmm	300	300	300
Standover heightmm	725	760	795
Fork rakemm	45	45	45
Trailmm	88	89	88
Stack/reach ratio	1.41	1.38	1.37

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: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 1
Smallest sprocket: 18
Largest sprocket: 18
Lowest gear: 58.0 in
Highest gear: 58.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 50c
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 29″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 22.2 km/h
Highest gear: 22.2 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.