Kona Unit X

Name: Kona Unit X
Brand: Kona

2025 MountainCross-country Manufacturer page

Last known price: $1,799

Prices shown first for United States
Suspension: Rigid
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
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

19 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

Reynolds 520 Butted Cromoly Not identified

Suspension

2 parts

Fork
- Kona
Rear shock

None

Drivetrain

8 parts

Bottom bracket
- Shimano
Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Chain guide

None
Crankset
- Shimano Deore FC-M6100 12 speeds 32t
FC-M6100
Front derailleur

None
Rear derailleur
- Shimano Deore
Shifters
- Shimano Deore SL-M6100 12 speeds
SL-M6100

Brakes

3 parts

Wheels and tires

5 parts

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

Stainless Black 14g Not identified
Tires
- Maxxis Rekon

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset

TH ZST No.10 Not identified
Pedals

None
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: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 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

1 measure

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

Shifting

Mechanical

222 of 1,648 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2025
Sample: 1,648 bicycles with this information
Coverage: 95.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 km/h

Total gear range 510%

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: 18.2–92.8 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.

Differences across 2025 builds
Specification	This bicycle Kona Unit X	Kona Unit
Drivetrain
Rear sprockets	12	1
Smallest sprocket	10	18
Largest sprocket	51	18
Lowest gear	18.2 in	51.6 in
Highest gear	92.8 in	51.6 in
Cockpit
Shifting	Mechanical	No shifting