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.
- Gearing
2018 Kona Big Kahuna has a 14% lower climbing ratio than 2017 Kona Big Kahuna.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
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.
Lowest0.52:1Highest3.27:1Total range625%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 27.5×2.8.
Lowest0.61:1Highest3.27:1Total range536%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 27.5×2.8.
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
2018 Kona Big Kahuna
2017 Kona Big Kahuna
Overview
Model Year
2018
2017
Brand
Kona
Kona
Model
Big Kahuna
Big Kahuna
Bicycle Type
Mountain
Mountain
Colors
Gloss Hot Orange & Black w/ Black & Blue Decals
Gloss Red/Red/Silver
Sizes
S, M, L, XL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
Kona 6061 Aluminum Butted
Kona Race Light 6061 Aluminum Butted
Frame Material
Aluminum
Aluminum
Fork
RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing
RockShox Recon Silver RL Solo Air 100mm Tapered QR15 110mm Spacing
Drivetrain
Shifters
Shimano Deore
Shimano Deore
Front Derailleur
Shimano Deore
Shimano Deore
Rear Derailleur
Shimano Deore
Shimano Deore
Crankset
RaceFace Aeffect; Chainring: 22/36t
RaceFace Aeffect; Chainring: 22/36t
Bottom Bracket
RaceFace 83mm
RaceFace
Cassette
Shimano HG500 11-42t 10spd
Shimano HG50 11-36t 10spd
Chain
Shimano HG54
KMC X10
Pedals
Kona JS2
Wellgo Platform
Brakes
Brakes
Brake Calipers: Shimano Hydraulic MT500; Front Brake Rotor: Shimano RT26 180mm; Rear Brake Rotor: Shimano RT26 160mm; Brake Levers: Shimano Hydraulic MT500
Brake Calipers: Shimano Deore; Front Brake Rotor: Shimano Deore 180mm; Rear Brake Rotor: Shimano Deore 160mm; Brake Levers: Shimano Deore
Cockpit & Contact Points
Headset
FSA No.57B
FSA No.57B
Handlebar
Kona XC/BC Riser
Kona XC/BC Riser
Stem
Kona XC/BC
Kona XC/BC
Saddle
WTB Pure V Sport
WTB Volt Sport SE (Volt Sport SE 250 size S)
Seatpost
Kona Thumb w/Offset 31.6mm
Kona Thumb w/Offset 31.6mm
Wheels & Tires
Hubs
(F) Formula 110x15mm / (R) Formula 157x12mm
(F) Formula 110x15mm / (R) Formula 157x12mm
Rims
WTB Scraper i40 Pinned TCS
WTB Scraper i40
Spokes
Stainless Black 14g
Stainless 14g Black
Front Tire
Schwalbe Nobby Nic 27.5x2.8"
Schwalbe Nobby Nic 27.5x2.8"
Rear Tire
Schwalbe Nobby Nic 27.5x2.8"
Schwalbe Nobby Nic 27.5x2.8"
Wheel Size
27.5"
27.5"
Geometry · choose a size for each bicycle
Geometry size
Reach
429 mm
429 mm
Stack
613 mm
613 mm
Head-tube angle
69°
69°
Seat-tube angle
74°
74°
Seat tube
420 mm
420 mm
Head tube
105 mm
105 mm
Chainstay / rear center
440 mm
440 mm
Wheelbase
1135 mm
1135 mm
Bottom-bracket drop
55 mm
55 mm
Bottom-bracket height
310 mm
310 mm
Standover height
745 mm
745 mm
Fork offset / rake
51 mm
51 mm
Front center
700 mm
700 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.