Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. No key difference could be established from the available data. Check the full table for the details.

Selected-size geometry

Geometry overlay

Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

2017 Kona BlastSize M · 40/30/22T · 11–34T · 9-speed
Lowest0.65:1Highest3.64:1Total range562%

Speed unavailable: wheel or tire size is missing or unclear.

2019 Kona BlastSize M · 28T · 11–42T · 10-speed
Lowest0.67:1Highest2.55:1Total range382%
Estimated speed at 90 RPMLowest gear4.9 mphHighest gear18.7 mph

Rear tire: 27.5×2.25.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
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Specification
2017 Kona Blast
2019 Kona Blast
Overview
Model Year
2017
2019
Brand
Kona
Kona
Model
Blast
Blast
Bicycle Type
Mountain
Mountain
Colors
Matt Lime/Black/Silver or Matt Blue/Black/Silver
Matt Desert Tan w/ Charcoal & Brick Decals
Sizes
S, M, L, XL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
Kona Race Light 6061 Aluminum
Kona Race Light 6061 Aluminum Butted
Frame Material
Aluminum
Aluminum
Fork
RockShox 30 Silver TK Coil Spring 100mm
RockShox 30 Silver TK Solo Air 100mm
Drivetrain
Shifters
Shimano Altus
Shimano Deore
Front Derailleur
Shimano Alivio
—
Rear Derailleur
Shimano Deore
Shimano Deore
Crankset
Shimano Alivio; Chainring: 22/30/40t
FSA Alpha Drive 1x; Chainring: 28t
Bottom Bracket
Shimano ES300
FSA 7420
Cassette
Shimano Acera 11-34t 9spd
Shimano Deore 11-42t 10spd
Chain
KMC Z99 or KMC X9
KMC X10
Pedals
Wellgo Platform
Kona JS2
Brakes
Brakes
Brake Calipers: Shimano Hydraulic Disc; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano Hydraulic Disc
Brake Calipers: Shimano Hydraulic; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano Hydraulic
Cockpit & Contact Points
Headset
FSA No.57B
FSA No.57B
Handlebar
Kona XC/BC Riser
Kona XC/BC Riser
Stem
Kona XC
Kona XC
Saddle
Kona XC
Kona XC
Seatpost
Kona Thumb 31.6mm
Kona Thumb 31.6mm
Wheels & Tires
Hubs
(F) Joytech 100x9mm / (R) Shimano 135x10mm (centerlock)
(F) Formula 100x9mm (centerlock) / (R) Shimano 135x10mm (centerlock)
Rims
WTB SX 23 or Double Wall alloy
WTB ST I29 TCS
Spokes
Stainless Black 15g fr / 14g rr
Sandvik Stainless Black 15g fr / 14g rr
Front Tire
Maxxis Ardent 27.5x2.25" or Schwalbe Rapid Rob K-Guard 27.5x2.25"
WTB Trail Boss 27.5x2.25"
Rear Tire
Maxxis Crossmark 27.5x2.1" or Schwalbe Rapid Rob K-Guard 27.5x2.25"
WTB Trail Boss 27.5x2.25"
Wheel Size
27.5"
27.5"
Geometry · choose a size for each bicycle
Geometry size
Reach
427 mm
427 mm
Stack
601 mm
601 mm
Head-tube angle
68.5°
68.5°
Seat-tube angle
74°
74°
Seat tube
420 mm
420 mm
Head tube
115 mm
115 mm
Chainstay / rear center
425 mm
435 mm
Wheelbase
1111 mm
1121 mm
Bottom-bracket drop
50 mm
50 mm
Bottom-bracket height
304 mm
304 mm
Standover height
730 mm
725 mm
Fork offset / rake
42 mm
42 mm
Front center
691 mm
691 mm

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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