Kona Blast

2012 MountainCross-country

Fork travel: 100 mm
Wheels: 26″
Drivetrain: 3 × 9 24–42t / 11–34t
Gear range: 541%
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

20 of 24 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 Race Light 7005 Aluminum Butted Not identified

Suspension

2 parts

Fork
- RockShox XC
Rear shock

None

Drivetrain

7 parts

Brakes

3 parts

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Shimano FH-M475
FH-M475
Rims
- Alex Rims
Spokes

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

Cockpit and contact points

7 parts

Grips
- Kona
Handlebar
- Kona
Headset

TH No. 10 Not identified
Pedals
- Wellgo
LU-A9
Saddle
- WTB
Seatpost
- Kona
Stem
- Kona

Sizes and geometry

7 sizes Open in the geometry plotter

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

Size 18"

Table

Reach 425mm

Stack 585mm

Wheelbase 1105mm

Head angle 68.5°

Seat angle 72.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	385	405	415	425	420	430	445
Stackmm	550	595	575	585	600	605	615
Top tube lengthmm	560	585	595	610	620	635	660
Seat tube lengthmm	355	405	430	455	485	510	560
Head tube lengthmm	100	120	130	140	155	165	180
Head tube angle	68°	68°	68.5°	68.5°	68.5°	68.5°	68.5°
Seat tube angle	72.5°	72.5°	72.5°	72.5°	71.5°	71.5°	71°
Chainstay lengthmm	420	420	420	420	420	420	420
Wheelbasemm	1055	1080	1090	1105	1105	1120	1145
Front centermm	635	665	675	685	690	700	725
Bottom bracket dropmm	38	38	33	33	33	33	28
Bottom bracket heightmm	305	305	310	310	310	310	315
Standover heightmm	730	750	770	785	805	820	855
Fork rakemm	40	40	40	40	40	40	40
Trailmm	93	107	92	91	92	89	86
Stack/reach ratio	1.43	1.47	1.39	1.38	1.43	1.41	1.38

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: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 18.4 in
Highest gear: 99.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

3 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2012
Sample: 238 bicycles with this information
Coverage: 75.3% of the class

Lowest gear

18.4 gear inches

This value is within 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

99.3 gear inches

This value is within 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: 7.0 km/h
Highest gear: 38.0 km/h

Total gear range 541%

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: 18.4–99.3 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