big kahuna


big kahuna
We've drawn upon all of our 25 years making bikes to craft this 29-inch-wheel gem that's born to race. With geometry specifically purposed for cross-country racing, the Big Kahuna features all of the high-performance benefits of a Kona Scandium 6069 frameset—lighter, faster and marvelously responsive. This year, the Big Kahuna comes with a new BB92 press fit bottom bracket, a stiff 142x12 rear axle, tapered HT and direct-mount front derailleur.


Frame Material Kona Scandium 69
Sizes 16", 18", 19", 20", 22"
Rear Shock N/A
Fork Rock Shox Reba RL 29er Tapered 100mm
Crankarms Sram X7
Chainrings 24/38t
B/B Sram X7
Pedals Shimano M520 Clipless
Chain Sram PC1031
Freewheel Sram PG1030 11-36t 10 spd
F/D Sram X7
R/D Sram X9
Shifters Sram X7
Brake Calipers Avid Elixir 5
Front Brake Rotor Avid HS1 180mm
Rear Brake Rotor Avid HS1 160mm
Brake Levers Avid Elixir 5
Headset FSA No.57B-1
Handlebar Kona Energy
Stem Kona XC/Road Deluxe
Seatpost Kona Double Clamp w/offset
Seat Clamp Kona Clamp
Grips Kona Race Light LOG
Saddle WTB Volt Comp
Front Hub Easton XC 29er Wheelset 15mm
Rear Hub Easton XC 29er Wheelset 142x12mm
Spokes Easton XC 29er Wheelset
Rims Easton XC 29er Wheelset
Front Tire Maxxis Ikon 29x2.2" Folding
Rear Tire Maxxis Ikon 29x2.2" Folding
Paint Color Matt Dark Grey w/White & Silver
Extras N/A
inches 16 22.5 74° 68.5° 17.3 26.2 43.3 19.9 1.9 - 2.3 12 30.7 4.3 BB92PF 34.9 24.3 15.5
inches 18 23.5 74° 70° 17.3 26.6 43.8 19.9 1.9 - 2.1 12.2 32.1 4.7 BB92PF 34.9 24.8 16.3
inches 19 24 73° 70° 17.3 26.7 43.8 19.9 1.9 - 2.1 12.2 32.7 5.1 BB92PF 34.9 25.1 16.3
inches 20 24.5 73° 70° 17.3 27.2 44.3 19.9 1.9 - 2.1 12.2 33.3 5.5 BB92PF 34.9 25.4 16.6
inches 22 25.5 73° 71° 17.3 27.8 44.9 19.9 1.9 - 2.1 12.2 34.6 6.3 BB92PF 34.9 26.4 17.4
GEOMETRY LEGEND: FC = Front To Center BBH = Bottom Bracket Height
TTH = Top Tube Horizontal WB = Wheelbase SO = Standover
STA = Seat Tube Angle FL = Fork Length HT = Head Tube Length
HTA = Head Tube Angle OF = Fork Offset BBS = Bottom Bracket Size
RC = Chainstay Length BBD = Bottom Bracket Drop FD = Front Derailleur Clamp Size
REACH = Horizontal Distance from center of BB to the top of the headtube centerline
STACK = Vertical Distance from center of BB to the top of the headtube centerline
Note: All Specifications Are Subject To Change Without Notice



Known to be one of the strongest alloys in the world, Kona Scandium 6069 is featured in many of our high-end bike models, from dual-suspension mountain bikes through to some of our top-ranking asphalt rides. Comparable to carbon when it comes to weight, but exponentially more durable, Kona has always been a fan of Scandium and is one of the few companies in the world to use it so extensively.

Scandium is a rare earth metal and potent grain refiner that, when added to aluminum alloy, elevates the strength and durability of the material by 50 per cent. Scandium aligns the grains of the alloy, making the metal less susceptible to failure. Scandium alloys are twice as strong as 6061 or 7005 Aluminum, which means our product team uses much less material. Because of a Scandium alloy's strength, it can be butted thinly enough so the aluminum gives a more compliant feel that's similar to steel but without weight. In more specific terms, we're shaving weight off our aluminum frames by 10 to 15 per cent, without sacrificing strength and durability.

Introduced to our line in 2012, new Kona Scandium 6069 comes with yield strengths that are about 40 per cent higher than previous scandium alloys. The result is the strongest-per-weight aluminum alloy ever made. Because of its fibrous or fine-grained structure, Scandium 6069 alloy reveals a unique combination of high strength and toughness, good corrosion resistance and excellent fatigue strength.


Short chainstays and seatstays provide a perfect balance of stability and power transfer when out of the saddle and pedalling hard. Shorter seatstays also have less deflection during braking and accelerate faster than longer stays. The shorter rear triangle also helps the bike to negotiate tight-twisting sections of trail. Our new Entourage short-travel downhill bike is a good example of an incredibly compact rear triangle. Our goal was to create a bike that was easy to jump and trick, and could also corner aggressively. With seatstays measuring just 415mm, we've created one of the most nimble short travel DH bikes in the industry.


By having the headset bearing located inside the headtube (called zero stack), rather than the top and bottom, we are able to achieve a number of advantages when it comes to front-end stiffness, durability and overall riding performance. The major benefit of an internal headset is the extra layer of protection it provides the bearings against the elements. Additionally, the bearings are commonly available angular contact bearings, which are easily and inexpensively replaced. An internal headset also reduces stack height, so the height of the stem and bars are more adjustable, giving the rider the best fit possible.


For 2013, you'll find a large majority of Kona bicycles featuring zero stack and tapered headtubes. From cyclocross to cross-country, 29ers right through to longer-travel dual-suspension models, like our Entourage and Operator, a tapered headtube provides more support at the intersection of the toptube and downtube, greatly improving stability and overall performance.

Aside from improving the aesthetic due to its cleaner lines and smooth transition between the fork crown and the headset cover, tapered headtubes also offer a more solid interface between forks with tapered steertubes and the bicycle frame itself. More girth at the bottom of the headtube better distributes shock force, prolonging the bearing life of the headset itself. The inherent strength of its triangular design also means a stronger steering position and improved balance, giving the rider more control in rough terrain. A zero stack, tapered headtube also puts strength where the load is going—into the lower headset cup—maximizing bearing durability where it's needed.


A 12x142mm rear axle provides two major advantages to the Kona rider: the 12mm diameter of the rear axle provides the rear hub and frame with a stiff interface, while the 142mm outer diameter of the hub allows the wheel to be quickly and properly positioned in the frame before the rear axle is inserted. The definition of all-mountain: DH stiffness with the speed and ease of XC.


Kona warrants to the original owner that their new Kona bicycle frame purchased from an authorized Kona dealer shall be free of defective materials or workmanship for the lifetime of ownership by the original owner. This warranty is limited to five years for carbon fiber frames.

During this warranty period, Kona shall repair or replace, at its sole option, the bicycle frame if Kona determines the frame is defective and subject to this limited warranty. The original owner shall pay all labor and shipping charges connected with the repair or replacement of the bicycle frame. Please see the Kona owner's manual, provided with your bicycle, for additional information