kula

KONA SCANDIUM 6069 BUTTED

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.

COMPACT REAR TRIANGLE

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.

INTERNAL HEADSET

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.