Kona Roundabout

2012 UrbanComfort

Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 9 42t / 11–32t
Gear range: 291%
Frame: Steel
Brakes: Rim brake

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

16 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 Cromoly Butted Not identified

Suspension

2 parts

Fork
- Kona
Rear shock

None

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano CS-HG61
CS-HG61
Chain
- Shimano CN-HG53
CN-HG53
Crankset

42T/Chainguard Not identified
Front derailleur

None
Rear derailleur
- Shimano Alivio
Shifters
- Shimano Acera

Brakes

3 parts

Wheels and tires

5 parts

Front hub
- Formula FM-21
FM-21
Rear hub
- Shimano FH-2200
FH-2200
Rims

Freedom Racine Elite Not identified
Spokes

Sandvik 15g fr/14g rr Not identified
Tires
- Continental

Cockpit and contact points

7 parts

Grips

Velo DuraCork Not identified
Handlebar
- Kona
Headset

TH Not identified
Pedals
- VP
VP-198
Saddle
- Kona
Seatpost
- Kona
Stem
- Kona

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Geometry diagram unavailable

The drawing needs seat tube length, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	368	394	418.1
Stackmm	529	545	560.4
Top tube lengthmm	530	560	590
Head tube lengthmm	115	135	155
Head tube angle	70.5°	70.5°	70.5°
Seat tube angle	73°	73°	73°
Chainstay lengthmm	440	440	440
Wheelbasemm	1008	1041	1072.2
Front centermm	580	611	641.4
Bottom bracket heightmm	265	268	271
Standover heightmm	662	673	684
Fork rakemm	43	43	43
Stack/reach ratio	1.44	1.38	1.34

Not published by the manufacturer: Seat tube length, Bottom bracket drop, Trail, 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: 42
Largest chainring: 42
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 38.1 in
Highest gear: 110.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 28c
Travel: Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

38.1 gear inches

This value is above the central range for this class.

Cohort: Urban / Comfort Model year: 2012
Sample: 59 bicycles with this information
Coverage: 76.6% of the class

Highest gear

110.7 gear inches

This value is above the central range for this class.

Cohort: Urban / Comfort Model year: 2012
Sample: 59 bicycles with this information
Coverage: 76.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 14.6 km/h
Highest gear: 42.4 km/h

Total gear range 291%

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: 38.1–110.7 gear inches
Class reference (p10–p90): 21.4–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Comfort Model year: 2012
Lowest gear: 59 bicycles with this information, 76.6% of the class
Highest gear: 59 bicycles with this information, 76.6% of the class