Velopedia Bicycle Archive

2021 Kona Kahuna

Original specifications: 29" wheels · geometry for 4 published sizes.

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At a glance

Archive #900001987
Model year
2021
Category
Mountain
Original MSRP
$1,399.00
Sizes
S, M, L, XL
Colors
Gloss Metallic Alpine Blue w/ Metallic Silver & Black Decals
Geometry
4 manufacturer sizes
In this record
22 specifications · archived image · original MSRP · geometry
Model history 12 other years

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Identification clues

2021 archived details

Published colors
Gloss Metallic Alpine Blue w/ Metallic Silver & Black Decals
Frame
Aluminum

Clues, not proof of model year. Colors vary and components may have been replaced.

Campaign
Original buildAluminum · 29"

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Gloss Metallic Alpine Blue w/ Metallic Silver & Black Decals

Frameset

Frame ConstructionKona Race Light 6061 Aluminum Butted
Frame MaterialAluminum
ForkRockShox Recon Silver RL Solo Air 100mm Tapered 110mm Spacing

Drivetrain

ShiftersShimano Deore 12 spd
Rear DerailleurShimano Deore 12 spd
CranksetShimano Deore 12spd; Chainring: 32t
Bottom BracketShimano 73mm
CassetteShimano Deore 10-51t 12spd
ChainShimano Deore 12spd
PedalsKona JS2

Brakes

BrakesBrake Calipers: Shimano MT401 Hydraulic; Front Brake Rotor: Shimano RT10 180mm; Rear Brake Rotor: Shimano RT10 160mm; Brake Levers: Shimano MT401 Hydraulic

Cockpit & Contact Points

HeadsetFSA No.57B
HandlebarKona XC/BC Riser
StemKona XC
SaddleWTB Volt
SeatpostKona Thumb w/Offset 31.6mm

Wheels & Tires

Hubs(F) Shimano 110x15mm / (R) Shimano 135x10mm
RimsWTB ST I27 TCS 2.0
SpokesStainless Black 14g
Front TireMaxxis Forekaster 29x2.35"
Rear TireMaxxis Forekaster 29x2.35"
Wheel Size29"

Geometry

4 sizes · 15 measurements

Frame measurements by size.

All geometry measurements4 sizes · 15 measurements
MeasurementSMLXL
Seat tube370 mm420 mm470 mm530 mm
Top tube576 mm604 mm631 mm669 mm
Head tube95 mm105 mm115 mm125 mm
Head-tube angle68°68°68°68°
Seat-tube angle75°75°75°75°
Chainstay / rear center450 mm450 mm450 mm450 mm
Wheelbase1135 mm1164 mm1192 mm1231 mm
Bottom-bracket drop60 mm60 mm60 mm60 mm
Bottom-bracket height315 mm315 mm315 mm315 mm
Reach415 mm440 mm465 mm500 mm
Stack602 mm611 mm620 mm629 mm
Standover height727 mm733 mm738 mm760 mm
Fork offset / rake51 mm51 mm51 mm51 mm
Front center691 mm720 mm749 mm787 mm
Fork length / axle-to-crown506 mm506 mm506 mm506 mm

Dimensions as recorded.

Gearing

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

RPM

RPM = pedal turns per minute.

All published sizes32T · 10–51T · 12-speed
Lowest0.63:1 Highest3.20:1 Total range510%
Estimated speed At 90 RPM Lowest gear4.9 mph Highest gear25.0 mph

Rear tire: 29×2.35.

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

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
Shimano Deore 12spd
Retailer offers
Cassette · Original
Shimano Deore 10-51t 12spd
Retailer offers
Other replacement options (1)
Front tire · Original
Maxxis Forekaster 29x2.35"
Retailer offers
Other replacement options (1)

Specialized Ground Control Grid Lite T5/T7 TLR Tire Black, 29x2.35

Replacement option

More parts (6)Fewer parts
Rear derailleur · Original
Shimano Deore 12 spd
Retailer offers
Saddle · Original
WTB Volt
Crankset · Original
Shimano Deore 12spd

Chainring: 32t

Shifters · Original
Shimano Deore 12 spd
Headset · Original
FSA No.57B
Rims · Original
WTB ST i27 TCS 2.0

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire
Maxxis Forekaster 29x2.35"Check: Verify the fitted tire’s size marking and rim type.
Rear tire
Maxxis Forekaster 29x2.35"Check: Verify the rear size; it may differ from the front.
Drivetrain
12-speedCheck: Match the installed drivetrain family, not just its speed count.
Bottom bracket / shell
Shimano 73mmCheck: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Seatpost diameter. Check the fitted parts for these details.

Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
0 of 20 checked Progress stays in this browser for this record.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2021 Kona Kahuna · Mountain · Published sizes: S, M, L, XL

Archived: Frame: Kona Race Light 6061 Aluminum Butted · Fork: RockShox Recon Silver RL Solo Air 100mm Tapered 110mm Spacing

Archived: Fork: RockShox Recon Silver RL Solo Air 100mm Tapered 110mm Spacing

Archived: Shifters: Shimano Deore 12 spd · Rear derailleur: Shimano Deore 12 spd · Crankset: Shimano Deore 12spd; Chainring: 32t · Bottom bracket: Shimano 73mm · Cassette: Shimano Deore 10-51t 12spd · Chain: Shimano Deore 12spd

Archived: Brakes: Brake Calipers: Shimano MT401 Hydraulic; Front Brake Rotor: Shimano RT10 180mm; Rear Brake Rotor: Shimano RT10 160mm; Brake Levers: Shimano MT401 Hydraulic

Archived: Wheel size: 29" · Rims: WTB ST i27 TCS 2.0 · Hubs: (F) Shimano 110x15mm / (R) Shimano 135x10mm · Front tire: Maxxis Forekaster 29x2.35" · Rear tire: Maxxis Forekaster 29x2.35"

Controls and contact points

Archived: Headset: FSA No.57B · Handlebar: Kona XC/BC Riser · Stem: Kona XC · Seatpost: Kona Thumb w/Offset 31.6mm · Saddle: WTB Volt · Pedals: Kona JS2

Before and during the test ride

Follow the full used-bike inspection order →

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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