Velopedia Bicycle Archive
Compare Bicycles
Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Frame geometry
2020 Kona Blast has 13 mm more reach than 2019 Kona Blast in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Handling
2020 Kona Blast has a 0.5° slacker head-tube angle than 2019 Kona Blast in the selected sizes.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
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.
Lowest0.67:1Highest2.55:1Total range382%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 27.5×2.25.
Lowest0.67:1Highest2.55:1Total range382%
Estimated speed at 90 RPMLowest gearHighest gear
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.
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.
Specification
2019 Kona Blast
2020 Kona Blast
Overview
Model Year
2019
2020
Brand
Kona
Kona
Model
Blast
Blast
Bicycle Type
Mountain
Mountain
Colors
Matt Desert Tan w/ Charcoal & Brick Decals
Gloss Dirty Cyan or Black w/ Dark Cyan & Faux Yellow Decals
Sizes
S, M, L, XL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
Kona Race Light 6061 Aluminum Butted
Kona Race Light 6061 Aluminum Butted
Frame Material
Aluminum
Aluminum
Fork
RockShox 30 Silver TK Solo Air 100mm
RockShox 30 Silver TK Solo Air 100mm
Drivetrain
Shifters
Shimano Deore
Shimano Deore
Rear Derailleur
Shimano Deore
Shimano Deore
Crankset
FSA Alpha Drive 1x; Chainring: 28t
FSA Alpha Drive 1x; Chainring: 28t
Bottom Bracket
FSA 7420
FSA 7420
Cassette
Shimano Deore 11-42t 10spd
Shimano Deore 11-42t 10spd
Chain
KMC X10
KMC X10
Pedals
Kona JS2
Kona JS2
Brakes
Brakes
Brake Calipers: Shimano Hydraulic; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano Hydraulic
Brake Calipers: Shimano MT401 Hydraulic; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano MT401 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) Formula 100x9mm (centerlock) / (R) Shimano 135x10mm (centerlock)
(F) Formula 100x9mm (centerlock) / (R) Shimano 135x10mm (centerlock)
Rims
WTB ST I29 TCS
WTB ST I27 TCS 2.0
Spokes
Sandvik Stainless Black 15g fr / 14g rr
Stainless Black 14g
Front Tire
WTB Trail Boss 27.5x2.25"
WTB Trail Boss 27.5x2.25"
Rear Tire
WTB Trail Boss 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
440 mm
Stack
601 mm
599 mm
Head-tube angle
68.5°
68°
Seat-tube angle
74°
75°
Seat tube
420 mm
420 mm
Head tube
115 mm
115 mm
Chainstay / rear center
435 mm
435 mm
Wheelbase
1121 mm
1139 mm
Bottom-bracket drop
50 mm
50 mm
Bottom-bracket height
304 mm
304 mm
Standover height
725 mm
718 mm
Fork offset / rake
42 mm
42 mm
Front center
691 mm
709 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.