Velopedia Bicycle Archive
2020 Kona Kahuna
Original manufacturer specifications including 29" wheels, geometry for 4 published sizes.
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What Velopedia knows
- Model year
- 2020
- Category
- Mountain
- Sizes
- S, M, L, XL
- Colors
- Gloss Ultraviolet w/ Gold & Light Ultraviolet Decals
- Geometry
- 4 manufacturer sizes · Geometry context
- Record coverage
- 24 preserved details · archived image · preserved geometry
- Archive ID
- 900002373
Model history 8 other years
Frameset
| Frame Construction | Kona Race Light 6061 Aluminum Butted |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing |
| Rear Shock | n/a |
Drivetrain
| Shifters | SRAM SX-Eagle |
|---|---|
| Front Derailleur | n/a |
| Rear Derailleur | SRAM SX-Eagle |
| Crankset | SRAM SX-Eagle; Chainring: 32t X-Sync Eagle |
| Bottom Bracket | SRAM Powerspline 73mm |
| Cassette | SRAM SX-Eagle 11-50t 12spd |
| Chain | SRAM SX-Eagle |
| Pedals | Kona JS2 |
Brakes
| Brakes | Brake Calipers: Shimano MT501 Hydraulic; Front Brake Rotor: Shimano RT56 180mm; Rear Brake Rotor: Shimano RT56 160mm; Brake Levers: Shimano MT501 Hydraulic |
|---|
Cockpit & Contact Points
| Headset | FSA No.57B |
|---|---|
| Handlebar | Kona XC/BC Riser |
| Stem | Kona XC |
| Saddle | WTB Volt Comp (Comp 250 size S) |
| Seatpost | Kona Thumb w/Offset 31.6mm |
Wheels & Tires
| Hubs | (F) Formula 110x15mm / (R) Formula 135x10mm |
|---|---|
| Rims | WTB ST I27 TCS 2.0 |
| Spokes | Stainless Black 14g |
| Front Tire | WTB Trail Boss 29x2.25" |
| Rear Tire | WTB Trail Boss 29x2.25" |
| Wheel Size | 29" |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 370 mm | 420 mm | 470 mm | 530 mm |
| Top tube | 576 mm | 604 mm | 631 mm | 669 mm |
| Head tube | 95 mm | 105 mm | 115 mm | 125 mm |
| Head-tube angle | 68° | 68° | 68° | 68° |
| Seat-tube angle | 75° | 75° | 75° | 75° |
| Chainstay / rear center | 450 mm | 450 mm | 450 mm | 450 mm |
| Wheelbase | 1135 mm | 1164 mm | 1192 mm | 1231 mm |
| Bottom-bracket drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Bottom-bracket height | 315 mm | 315 mm | 315 mm | 315 mm |
| Reach | 415 mm | 440 mm | 465 mm | 500 mm |
| Stack | 602 mm | 611 mm | 620 mm | 629 mm |
| Standover height | 727 mm | 733 mm | 738 mm | 760 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 691 mm | 720 mm | 749 mm | 787 mm |
| Fork length / axle-to-crown | 506 mm | 506 mm | 506 mm | 506 mm |
Geometry source: Kona first-party archive metric geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
S geometry
Archive context: The chainstay of 450 mm sits toward the longer rear-center end. Its bottom-bracket drop of 60 mm sits toward the deeper-drop end. The head angle of 68° sits somewhat steeper than typical.
Compared with 78 distinct mountain geometries in the Small-equivalent size cohort from model years 2018–2022 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze S geometry M geometry
Archive context: The chainstay of 450 mm sits toward the longer rear-center end. Its bottom-bracket drop of 60 mm sits somewhat deeper than typical. The head angle of 68° sits somewhat steeper than typical.
Compared with 80 distinct mountain geometries in the Medium-equivalent size cohort from model years 2018–2022 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M geometry L geometry
Archive context: The chainstay of 450 mm sits toward the longer rear-center end. Its bottom-bracket drop of 60 mm sits somewhat deeper than typical. The head angle of 68° sits somewhat steeper than typical.
Compared with 77 distinct mountain geometries in the Large-equivalent size cohort from model years 2018–2022 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze L geometry XL geometry
Archive context: The chainstay of 450 mm sits toward the longer rear-center end. Its bottom-bracket drop of 60 mm sits somewhat deeper than typical. Its stack of 629 mm sits somewhat lower than typical.
Compared with 67 distinct mountain geometries in the XL-equivalent size cohort from model years 2018–2022 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XL geometry Parts & serviceability
Find replacement parts
SRAM SX-Eagle
Interpreted as SRAM SX · 12-speed Named component · published drivetrain speed — verify exact version
SRAM SX-Eagle 11-50t 12spd
Interpreted as SRAM SX · 12-speed Component family — verify exact version
WTB Trail Boss 29x2.25"
Named tire and published size
More qualified parts (6)
SRAM Powerspline 73mm
Named archived component — verify dimensions
WTB Volt Comp (Comp 250 size S)
Named archived component — verify exact version
SRAM SX-Eagle; Chainring: 32t X-Sync Eagle
Component family — verify exact version
SRAM SX-Eagle
Interpreted as SRAM SX · 12-speed · mechanical Named component · published drivetrain speed — verify exact version
SRAM SX-Eagle
Interpreted as SRAM SX · 12-speed · mechanical Named component · published drivetrain speed — verify exact version
FSA No.57B
Exact archived model
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- SuspensionAsk when the fork was last serviced. Check the stanchions for damage, look for oil at the seals and make sure the fork moves smoothly without bushing play.Evaluate the suspension →
- DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 12-speed system.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2020 Kona Kahuna · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Kona Race Light 6061 Aluminum Butted · Fork: RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing
Suspension
Evaluate the suspension →Archived: Fork: RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM SX-Eagle · Rear derailleur: SRAM SX-Eagle · Crankset: SRAM SX-Eagle; Chainring: 32t X-Sync Eagle · Bottom bracket: SRAM Powerspline 73mm · Cassette: SRAM SX-Eagle 11-50t 12spd · Chain: SRAM SX-Eagle
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Shimano MT501 Hydraulic; Front Brake Rotor: Shimano RT56 180mm; Rear Brake Rotor: Shimano RT56 160mm; Brake Levers: Shimano MT501 Hydraulic
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Rims: WTB ST i27 TCS 2.0 · Hubs: (F) Formula 110x15mm / (R) Formula 135x10mm · Front tire: WTB Trail Boss 29x2.25" · Rear tire: WTB Trail Boss 29x2.25"
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 Comp (Comp 250 size S) · Pedals: Kona JS2
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.