Rear tire: 29×2.25.
Velopedia Bicycle Archive
2021 Kona El Kahuna
Original specifications: 29" wheels · geometry for 4 published sizes.
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At a glance
Archive #900002007- Model year
- 2021
- Category
- Mountain
- Original MSRP
- $2,999.00
- Sizes
- S, M, L, XL
- Colors
- Gloss Metallic Black w/ Charcoal & Metallic Silver Decals
- Geometry
- 4 manufacturer sizes
- In this record
- 20 specifications · archived image · original MSRP · geometry
Original buildAluminum · 29"
Frameset
| Frame Construction | Kona 6061 Aluminum Butted |
|---|---|
| Frame Material | Aluminum |
| Fork | Suntour XCR34 Air 100mm Tapered 110 Spacing |
Drivetrain
| Shifters | Shimano Deore |
|---|---|
| Rear Derailleur | Shimano Deore |
| Crankset | FSA E-Bike; Chainring: 36t |
| Cassette | Shimano Deore 11-46t 10spd |
| Chain | Shimano HG54 |
Brakes
| Brakes | Brake Calipers: Shimano MT-410; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano MT-401 |
|---|
Cockpit & Contact Points
| Headset | FSA no.57BP |
|---|---|
| Handlebar | Kona XC/BC Riser |
| Stem | Kona XC |
| Saddle | WTB Volt |
| Seatpost | Kona Thumb w/Offset 31.6mm |
Wheels & Tires
| Hubs | (F) Shimano 110x15mm / (R) Shimano 135x10mm |
|---|---|
| Rims | WTB ST I27 TCS 2.0 |
| Spokes | Stainless 14g |
| Front Tire | WTB Trail Boss 29x2.25" |
| Rear Tire | WTB Trail Boss 29x2.25" |
| Wheel Size | 29" |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 15 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 370 mm | 420 mm | 470 mm | 530 mm |
| Top tube | 581 mm | 607 mm | 633 mm | 665 mm |
| Head tube | 110 mm | 115 mm | 120 mm | 125 mm |
| Head-tube angle | 69° | 69° | 69° | 69° |
| Seat-tube angle | 74° | 74° | 74° | 74° |
| Chainstay / rear center | 465 mm | 465 mm | 465 mm | 465 mm |
| Wheelbase | 1134 mm | 1160 mm | 1187 mm | 1220 mm |
| Bottom-bracket drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Bottom-bracket height | 315 mm | 315 mm | 315 mm | 315 mm |
| Reach | 404 mm | 428 mm | 453 mm | 484 mm |
| Stack | 619 mm | 623 mm | 628 mm | 633 mm |
| Standover height | 738 mm | 742 mm | 747 mm | 766 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 676 mm | 701 mm | 728 mm | 761 mm |
| Fork length / axle-to-crown | 506 mm | 506 mm | 506 mm | 506 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
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 your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

Vittoria Barzo G2.0 4C XC Trail 29in Tire Anthracite/Black, XC-Trail/TNT, 29x2.25
Replacement option
More parts (6)Fewer parts
Chainring: 36t
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
- WTB Trail Boss 29x2.25"Check: Verify the fitted tire’s size marking and rim type.
- Rear tire
- WTB Trail Boss 29x2.25"Check: Verify the rear size; it may differ from the front.
- Drivetrain
- 10-speedCheck: Match the installed drivetrain family, not just its speed count.
Not confirmed in this record: Seatpost diameter · Bottom bracket / shell. Check the fitted parts for these details.
Bike-specific inspection checklist 24 checks based on 7 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: 2021 Kona El Kahuna · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Kona 6061 Aluminum Butted · Fork: Suntour XCR34 Air 100mm Tapered 110 Spacing
Suspension
Evaluate the suspension →Archived: Fork: Suntour XCR34 Air 100mm Tapered 110 Spacing
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Deore · Rear derailleur: Shimano Deore · Crankset: FSA E-Bike; Chainring: 36t · Cassette: Shimano Deore 11-46t 10spd · Chain: Shimano HG54
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Shimano MT-410; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano MT-401
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Rims: WTB ST i27 TCS 2.0 · Hubs: (F) Shimano 110x15mm / (R) Shimano 135x10mm · Front tire: WTB Trail Boss 29x2.25" · Rear tire: WTB Trail Boss 29x2.25"
Controls and contact points
Archived: Headset: FSA No.57BP · Handlebar: Kona XC/BC Riser · Stem: Kona XC · Seatpost: Kona Thumb w/Offset 31.6mm · Saddle: WTB Volt
E-bike system
Check the battery and electronics →Archived: Kona El Kahuna · electric-assist identification
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.



