Kona Unit X

Name: Kona Unit X
Brand: Kona

2021 MountainCross-country

Last known price: $1,499

Prices shown first for United States
Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 152.4–170.2
MD 157.5–182.9
LG 175.3–195.6
XL 180.3–195.6

Components

20 of 23 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

Reynolds 520 Butted Cromoly Not identified

Suspension

2 parts

Fork
- Kona
Rear shock

None

Drivetrain

8 parts

Bottom bracket
- SRAM
Cassette
- SRAM PG-1210 Eagle 12 speeds 11–50t
PG-1210
Chain
- SRAM SX Eagle 12 speeds
Chain guide

None
Crankset
- SRAM SX 32t
Front derailleur

None
Rear derailleur
- SRAM SX Eagle 12 speeds
Shifters
- SRAM SX Eagle Trigger 12 speeds

Brakes

3 parts

Wheels and tires

5 parts

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

Stainless Black 14g Not identified
Tires
- WTB

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset

TH ZST No.10 Not identified
Pedals
- Kona
Saddle
- WTB Volt
Seatpost
- Kona
Stem
- Kona

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 450mm

Stack 597mm

Wheelbase 1144mm

Head angle 68.0°

Seat angle 75.0°

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 Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	425	450	475	510
Stackmm	588	597	606	615
Top tube lengthmm	582	610	637	675
Seat tube lengthmm	370	420	470	530
Head tube lengthmm	110	120	130	140
Head tube angle	68°	68°	68°	68°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1115	1144	1173	1211
Front centermm	693	722	750	789
Bottom bracket dropmm	65	65	65	65
Bottom bracket heightmm	310	310	310	310
Standover heightmm	695	731	768	810
Fork rakemm	50	50	50	50
Trailmm	97	97	97	97
Stack/reach ratio	1.38	1.33	1.28	1.21

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: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 18.6 in
Highest gear: 84.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.6″
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

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

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Highest gear

84.4 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Shifting

Mechanical

89 of 1,368 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,368 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.1 km/h
Highest gear: 32.3 km/h

Total gear range 455%

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: 18.6–84.4 gear inches
Class reference (p10–p90): 17.4–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2021
Lowest gear: 1101 bicycles with this information, 80.3% of the class
Highest gear: 1101 bicycles with this information, 80.3% of the class

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.

Differences across 2021 builds
Specification	This bicycle Kona Unit X	Kona Unit
Drivetrain
Rear sprockets	12	1
Smallest sprocket	11	18
Largest sprocket	50	18
Lowest gear	18.6 in	51.6 in
Highest gear	84.4 in	51.6 in
Cockpit
Shifting	Mechanical	No shifting