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
2021 Kona Unit has 21 mm more reach than 2019 Kona Unit in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Frame geometry
2021 Kona Unit has 15 mm more stack than 2019 Kona Unit in the selected sizes.
More stack places the frame reference higher, not necessarily the handlebar.
- Handling
2021 Kona Unit has a 1.0° slacker head-tube angle than 2019 Kona Unit 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.
Ratio1.78:1
Estimated speed at 90 RPMGear
Rear tire: 27.5×2.8.
Ratio1.78:1
Estimated speed at 90 RPMGear
Rear tire: 29×2.6.
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 Unit
2021 Kona Unit
Overview
Model Year
2019
2021
Brand
Kona
Kona
Model
Unit
Unit
Bicycle Type
Mountain
Mountain
Original MSRP
Not documented
$1,249.00
Colors
Matt Eco Green w/ Slate Blue & Dirty Aqua Decals
Satin Fatgue Green w/ Gloss Yellow, Nicotine & Flame Fade Decals
Sizes
S, M, L, XL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
Reynolds 520 Butted Cromoly
Reynolds 520 Butted Cromoly
Frame Material
Steel
Steel
Fork
Kona Plus Fork
Kona Plus fork 110mm spacing
Drivetrain
Crankset
FSA Comet Modular; Chainring: 32t
FSA Comet Modular; Chainring: 32t
Bottom Bracket
FSA 73mm
FSA MegaExo 73mm
Cassette
Joytech 18t
Joytech 18t
Chain
KMC Z1 Narrow
KMC Z1 Narrow
Pedals
Kona JS2
Kona JS2
Brakes
Brakes
Brake Calipers: Tektro HDM275; Front Brake Rotor: Tektro TR180 180mm; Rear Brake Rotor: Tektro TR160 160mm; Brake Levers: Tektro HDM275
Brake Calipers: Shimano MT201 Hydraulic; Front Brake Rotor: Shimano RT26 180mm; Rear Brake Rotor: Shimano RT26 160mm; Brake Levers: Shimano MT201 Hydraulic
Cockpit & Contact Points
Headset
TH ZST no.10
TH ZST no.10
Handlebar
Kona XC/BC Riser
Kona XC/BC Riser
Stem
Kona XC/BC
Kona XC
Saddle
WTB Volt Comp (Comp 250 size S)
WTB Volt
Seatpost
Kona Thumb w/Offset 31.6mm
Kona Thumb w/Offset 31.6mm
Wheels & Tires
Hubs
(F) Formula 100x9mm / (R) Formula 135x10mm
(F) Formula 110x15mm / (R) Formula 148x12mm
Rims
WTB ST I35 TCS
WTB ST I30 TCS 2.0
Spokes
Sandvik Stainless 15g fr / 14g rr
Stainless Black 14g
Front Tire
WTB Ranger TCS 27.5x2.8"
WTB Ranger TCS 29x2.6"
Rear Tire
WTB Ranger TCS 27.5x2.8"
WTB Ranger TCS 29x2.6"
Wheel Size
27.5"
29"
Geometry · choose a size for each bicycle
Geometry size
Reach
429 mm
450 mm
Stack
582 mm
597 mm
Head-tube angle
69°
68°
Seat-tube angle
74°
75°
Seat tube
420 mm
420 mm
Head tube
105 mm
120 mm
Chainstay / rear center
442 mm
430 mm
Wheelbase
1121 mm
1144 mm
Bottom-bracket drop
60 mm
65 mm
Bottom-bracket height
300 mm
310 mm
Standover height
720 mm
731 mm
Fork offset / rake
50 mm
50 mm
Front center
686 mm
722 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.