Rear tire: 27.5×2.8.
Velopedia Bicycle Archive
2018 Kona Big Kahuna
Original specifications: 27.5" wheels · geometry for 4 published sizes.
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At a glance
Archive #900003576- Model year
- 2018
- Category
- Mountain
- Sizes
- S, M, L, XL
- Colors
- Gloss Hot Orange & Black w/ Black & Blue Decals
- Geometry
- 4 manufacturer sizes
- In this record
- 23 specifications · archived image · geometry
Model history 6 other years
Browse other years
Compare side by side
Identification clues
2018 archived details
- Published colors
- Gloss Hot Orange & Black w/ Black & Blue Decals
- Frame
- Aluminum
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildAluminum · 27.5"
Frameset
| Frame Construction | Kona 6061 Aluminum Butted |
|---|---|
| Frame Material | Aluminum |
| Fork | RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing |
Drivetrain
| Shifters | Shimano Deore |
|---|---|
| Front Derailleur | Shimano Deore |
| Rear Derailleur | Shimano Deore |
| Crankset | RaceFace Aeffect; Chainring: 22/36t |
| Bottom Bracket | RaceFace 83mm |
| Cassette | Shimano HG500 11-42t 10spd |
| Chain | Shimano HG54 |
| Pedals | Kona JS2 |
Brakes
| Brakes | Brake Calipers: Shimano Hydraulic MT500; Front Brake Rotor: Shimano RT26 180mm; Rear Brake Rotor: Shimano RT26 160mm; Brake Levers: Shimano Hydraulic MT500 |
|---|
Cockpit & Contact Points
| Headset | FSA No.57B |
|---|---|
| Handlebar | Kona XC/BC Riser |
| Stem | Kona XC/BC |
| Saddle | WTB Pure V Sport |
| Seatpost | Kona Thumb w/Offset 31.6mm |
Wheels & Tires
| Hubs | (F) Formula 110x15mm / (R) Formula 157x12mm |
|---|---|
| Rims | WTB Scraper i40 Pinned TCS |
| Spokes | Stainless Black 14g |
| Front Tire | Schwalbe Nobby Nic 27.5x2.8" |
| Rear Tire | Schwalbe Nobby Nic 27.5x2.8" |
| Wheel Size | 27.5" |
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 | 578 mm | 605 mm | 633 mm | 666 mm |
| Head tube | 95 mm | 105 mm | 115 mm | 125 mm |
| Head-tube angle | 69° | 69° | 69° | 69° |
| Seat-tube angle | 74° | 74° | 74° | 74° |
| Chainstay / rear center | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1107 mm | 1135 mm | 1164 mm | 1198 mm |
| Bottom-bracket drop | 55 mm | 55 mm | 55 mm | 55 mm |
| Bottom-bracket height | 310 mm | 310 mm | 310 mm | 310 mm |
| Reach | 405 mm | 429 mm | 454 mm | 485 mm |
| Stack | 604 mm | 613 mm | 623 mm | 632 mm |
| Standover height | 710 mm | 745 mm | 775 mm | 820 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Front center | 672 mm | 700 mm | 729 mm | 763 mm |
| Fork length / axle-to-crown | 509 mm | 509 mm | 509 mm | 509 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

Maxxis Rekon 3C/EXO/TR 27.5 Plus Tire Black, 27.5x2.8
Replacement option
More parts (7)Fewer parts
Chainring: 22/36t
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
- Schwalbe Nobby Nic 27.5x2.8"Check: Verify the fitted tire’s size marking and rim type.
- Rear tire
- Schwalbe Nobby Nic 27.5x2.8"Check: Verify the rear size; it may differ from the front.
- Drivetrain
- 10-speedCheck: Match the installed drivetrain family, not just its speed count.
- Bottom bracket / shell
- RaceFace 83mmCheck: 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
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: 2018 Kona Big Kahuna · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Kona 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: Shimano Deore · Front derailleur: Shimano Deore · Rear derailleur: Shimano Deore · Crankset: RaceFace Aeffect; Chainring: 22/36t · Bottom bracket: RaceFace 83mm · Cassette: Shimano HG500 11-42t 10spd · Chain: Shimano HG54
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Shimano Hydraulic MT500; Front Brake Rotor: Shimano RT26 180mm; Rear Brake Rotor: Shimano RT26 160mm; Brake Levers: Shimano Hydraulic MT500
Wheels and tires
Check wheels and tires →Archived: Wheel size: 27.5" · Rims: WTB Scraper i40 Pinned TCS · Hubs: (F) Formula 110x15mm / (R) Formula 157x12mm · Front tire: Schwalbe Nobby Nic 27.5x2.8" · Rear tire: Schwalbe Nobby Nic 27.5x2.8"
Controls and contact points
Archived: Headset: FSA No.57B · Handlebar: Kona XC/BC Riser · Stem: Kona XC/BC · Seatpost: Kona Thumb w/Offset 31.6mm · Saddle: WTB Pure V Sport · Pedals: Kona JS2
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.





