Kona Unit

2012 MountainCross-country

Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 1 32t / 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 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

Kona Cromoly Butted Not identified

Suspension

2 parts

Fork

P2 29er Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket
- FSA
Cassette
- Formula
Chain
- KMC
Crankset

32T/BashGuard Not identified
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

3 parts

Wheels and tires

5 parts

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

Sandvik Stainless 15g fr / 14g rr Not identified
Tires
- Maxxis Ignitor

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset
- FSA
Pedals
- Kona
Saddle
- WTB
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 19"

Table

Reach 425mm

Stack 605mm

Wheelbase 1105mm

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	405	425	425	430	450
Stackmm	575	595	605	620	640
Top tube lengthmm	570	595	610	620	650
Seat tube lengthmm	405	455	485	510	560
Head tube lengthmm	100	120	130	140	160
Head tube angle	68.5°	70°	70°	71°	72°
Seat tube angle	74°	74°	73°	73°	73°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1090	1105	1105	1105	1125
Front centermm	665	675	680	680	695
Bottom bracket dropmm	69	64	64	64	64
Bottom bracket heightmm	305	310	310	310	310
Standover heightmm	775	815	830	850	885
Fork rakemm	50	50	50	50	50
Trailmm	92	80	83	76	64
Stack/reach ratio	1.42	1.40	1.42	1.44	1.42

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: 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: 2012
Sample: 294 bicycles with this information
Coverage: 93.0% 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: 2012
Sample: 294 bicycles with this information
Coverage: 93.0% 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: 2012
Lowest gear: 294 bicycles with this information, 93.0% of the class
Highest gear: 294 bicycles with this information, 93.0% of the class