Kona Unit

2010 MountainCross-country

Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 1 32t / 18t
Gear range: 100%
Frame: Steel
Brakes: Mechanical disc

Sizes

Size guide

40.6cm
45.7cm
48.3cm
50.8cm
55.9cm

The manufacturer did not publish rider heights for these sizes.

Components

15 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 Cromoly Butted Not identified

Suspension

2 parts

Fork

P2 29er Disc Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Formula
Chain
- KMC
Crankset

32T/Guard Not identified
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

2 parts

Brake levers
- SRAM FR-5
FR-5
Brakes
- Avid

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula
Rims
- Alex Rims
EN-24
Spokes

Sandvik Stainless 15g Not identified
Tires
- Maxxis Ignitor

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset

TH Not identified
Pedals
- Kona
Saddle
- WTB Rocket
Seatpost
- Kona
Stem
- Kona

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size 48.3cm

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	568	593	606	618	630
Seat tube lengthmm	406	457	483	508	559
Head tube lengthmm	90	110	120	135	150
Head tube angle	70.7°	72.2°	72.2°	73.2°	73.3°
Seat tube angle	75.2°	75.2°	74.2°	74.2°	74.3°
Chainstay lengthmm	440	440	440	440	440
Wheelbasemm	1070	1088	1092	1094	1101
Front centermm	643	656	658	660	667
Bottom bracket dropmm	70	67	65	65	64
Bottom bracket heightmm	304	307	309	309	310
Standover heightmm	762	799	816	837	865
Fork rakemm	45	45	45	45	45

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: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 1
Smallest sprocket: 18
Largest sprocket: 18
Lowest gear: 51.6 in
Highest gear: 51.6 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: 2.1″
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

2 measures

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

Lowest gear

51.6 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2010
Sample: 186 bicycles with this information
Coverage: 75.6% of the class

Highest gear

51.6 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2010
Sample: 186 bicycles with this information
Coverage: 75.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 19.7 km/h
Highest gear: 19.7 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: 51.6–51.6 gear inches
Class reference (p10–p90): 16.8–116.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2010
Lowest gear: 186 bicycles with this information, 75.6% of the class
Highest gear: 186 bicycles with this information, 75.6% of the class