Kona Bass

2011 MountainDirt jump

Travel: 100 / 100 mm Fork / rear shock
Wheels: 26″
Drivetrain: 1 × 1 28t / 14t
Gear range: 100%
Frame: Aluminum
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 Clump 7005 Aluminum, 100mm Travel Not identified

Suspension

2 parts

Fork
- Marzocchi
Rear shock
- Kona

Drivetrain

4 parts

Bottom bracket

Aricle H Type Not identified
Cassette
- Formula
Chain
- KMC
Z-510-HX
Crankset

Aricle 28T Not identified

Brakes

3 parts

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula
Rims

Sun Estate Not identified
Spokes

Sandvik Stainless 14g Not identified
Tires
- Maxxis

Cockpit and contact points

7 parts

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 381

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	567	593	618
Seat tube lengthmm	368	381	394
Head tube lengthmm	120	120	120
Head tube angle	69°	69°	69°
Seat tube angle	72.5°	72.5°	72.5°
Chainstay lengthmm	417	417	417
Wheelbasemm	1072	1097	1122
Front centermm	655	680	705
Bottom bracket dropmm	8	8	8
Bottom bracket heightmm	335	335	335
Standover heightmm	776	768	774
Fork rakemm	48	48	48

Not published by the manufacturer: Reach, Stack, Trail, Stack/reach ratio, 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

Suspension

Suspension configuration: Full suspension
Front travel: 100 mm
Rear travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 1
Smallest sprocket: 14
Largest sprocket: 14
Lowest gear: 52.0 in
Highest gear: 52.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Fork spring: Air
Tire width: 2.35″
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 19.9 km/h
Highest gear: 19.9 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: 52.0–52.0 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 2010

Changes since 2010
Specification	2010 Kona Bass	This bicycle Kona Bass
Drivetrain
Smallest chainring	32	28
Largest chainring	32	28
Smallest sprocket	13	14
Largest sprocket	13	14
Lowest gear	64.0 in	52.0 in
Highest gear	64.0 in	52.0 in
Other specifications
Tire width	2.25″	2.35″