Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2012 Kona Big Kahuna.

  2. Gearing

    2018 Kona Big Kahuna has a 27% lower climbing ratio than 2012 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.

2018 Kona Big KahunaSize M · 36/22T · 11–42T · 10-speed
Lowest0.52:1Highest3.27:1Total range625%
Estimated speed at 90 RPMLowest gear4.0 mphHighest gear25.1 mph

Rear tire: 27.5×2.8.

2012 Kona Big Kahuna39/26T · 12–36T · 10-speed
Lowest0.72:1Highest3.25:1Total range450%

Speed unavailable: wheel or tire size is missing or unclear.

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

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.
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Specification
2018 Kona Big Kahuna
2012 Kona Big Kahuna
Overview
Model Year
2018
2012
Brand
Kona
Kona
Model
Big Kahuna
Big Kahuna
Bicycle Type
Mountain
Mountain
Colors
Gloss Hot Orange & Black w/ Black & Blue Decals
Grey/Black
Sizes
S, M, L, XL
16, 18, 19, 20, 22
Weight
—
—
Frameset
Frame Construction
Kona 6061 Aluminum Butted
—
Frame Material
Aluminum
Kona Scandium 69 Butted Alloy
Fork
RockShox Recon RL Solo Air 100mm Tapered 110mm Spacing
RockShox Reba RL 29
Drivetrain
Shifters
Shimano Deore
SRAM X7 10spd
Front Derailleur
Shimano Deore
SRAM X7
Rear Derailleur
Shimano Deore
SRAM X9 10spd
Crankset
RaceFace Aeffect; Chainring: 22/36t
SRAM X7 39/26t
Bottom Bracket
RaceFace 83mm
SRAM X7
Cassette
Shimano HG500 11-42t 10spd
SRAM PG-1030 12-36T
Chain
Shimano HG54
SRAM PC-1031
Pedals
Kona JS2
Shimano 520 clipless
Brakes
Brakes
Brake Calipers: Shimano Hydraulic MT500; Front Brake Rotor: Shimano RT26 180mm; Rear Brake Rotor: Shimano RT26 160mm; Brake Levers: Shimano Hydraulic MT500
Avid Elixir 5 180/160mm
Cockpit & Contact Points
Headset
FSA No.57B
FSA No. 57-B
Handlebar
Kona XC/BC Riser
Kona Deluxe Energy Bar
Stem
Kona XC/BC
Kona XC/Road
Saddle
WTB Pure V Sport
WTB Valcon Comp
Seatpost
Kona Thumb w/Offset 31.6mm
Kona Double Clamp Offset
Wheels & Tires
Hubs
(F) Formula 110x15mm / (R) Formula 157x12mm
—
Rims
WTB Scraper i40 Pinned TCS
Easton XC 29er
Spokes
Stainless Black 14g
—
Front Tire
Schwalbe Nobby Nic 27.5x2.8"
Maxxis Ikon 29x2.2 Kevlar
Rear Tire
Schwalbe Nobby Nic 27.5x2.8"
—
Wheel Size
27.5"
—
Geometry · choose a size for each bicycle
Geometry size
—
Reach
429 mm
—
Stack
613 mm
—
Head-tube angle
69°
—
Seat-tube angle
74°
—
Seat tube
420 mm
—
Head tube
105 mm
—
Chainstay / rear center
440 mm
—
Wheelbase
1135 mm
—
Bottom-bracket drop
55 mm
—
Bottom-bracket height
310 mm
—
Standover height
745 mm
—
Fork offset / rake
51 mm
—
Front center
700 mm
—

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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