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/ Home / Machines / Customs /
Evolution of the Species
Evoluzione Cyclesports BMW K 1200 S
Jeff Buchanan
11/01/2006
Photography by Kevin Wing
Photography by Kevin Wing

Ever since the invention of the first motorcycle—credited to Gottlieb Daimler in 1885—there have been individuals, lured by innate curiosity, who were intent on tinkering with the metallurgical contraptions, toying with the various bits that make them go, unraveling their mysteries and seeking ways to improve their design. An unusual breed, these men, they possess an inexplicable desire to take things apart, figure out how they work, and find ways to make them perform better. But, alas, where would we, the gear heads, the admirers of the modified, the consumers of performance, be today if not for the tireless experiments and creative indulgences of the tinkerers?

Ken Zeller, owner of Evoluzione Cyclesports, is one such tinkerer. Zeller has spent many days and nights toiling away in the autonomy of his workshop, dissecting perfectly good machines to discover what he can improve upon. “I haven’t bought anything since I was 10 years old,” Zeller says with a smile, “that I didn’t look at how I could change it.” (Click image to enlarge)

Manufacturing custom high-performance aftermarket products, Evoluzione—as the Italian verbiage suggests—caters to the exotic Italian marques of Ducati, MV Agusta and Aprilia, with a special penchant for rarities such as Bimota and Benelli. However, a northern wind has been blowing over the Simi Valley workshop as of late, bringing a decidedly Germanic presence to the Evoluzione stable.

Recently, one of Zeller’s loyal customers bought a BMW K 1200 S and immediately began singing its praises. “He really loved it,” Zeller says. “I honestly didn’t pay much attention to it because, well,” Zeller hesitates, “it was a BMW.” The statement reflects a not all that uncommon perception some people have toward the brand—however erroneous—as being somewhat staid, producing tame sportbikes and touring machines for the graying set.

Over the ensuing weeks, Zeller noticed a marked increase in the number of K 1200s appearing on the streets and railing through the canyons near his Southern California head-quarters. There was a wave of converts among his motor-cycling acquaintances and, in just the short span of a month, five more of his regular customers purchased K bikes.


One exclusively for pavement, the other ready for dirt, two Evoluzione Cyclesports BMWs await their riders. (Click image to enlarge)


Naturally, Zeller became curious about the emerging trend and decided to examine one of the K bikes, just to see what all the fuss was about. Paying a visit to a local BMW dealership Zeller admits that, although embarking on the outing for research, he lacked a particularly open mind. A scrutinizing walk around a K 1200 S on the showroom floor, though admittedly revealing a beautifully engineered, aesthetically pleasing motorcycle, did not assuage Zeller’s initial feelings of it just not being for him. His attitude changed with a test ride. The machine’s performance, combined with the comfortable ergonomics, impressed him. “I had a lot of really cool, exotic bikes,” Zeller says, “but I realized I just wasn’t excited about riding them, because, the older I was getting, the more uncomfortable they were becoming.” So he bought the K bike on the spot.

Zeller immediately began racking up miles on the K 1200 S with a reinvigorated interest in what he had gotten into motorcycles for in the first place—riding. However, that tinkering DNA and curiosity about the BMW’s internal idiosyncrasies soon took hold. Zeller rolled the bike into the workshop, the tools came out, and the bike was taken apart to see what made it go. The K 1200’s aero-dynamic bodywork was sent out for a custom Evoluzione paint scheme. By the time it came back and was bolted into place, the motorcycle would have a decidedly new character.



To enhance engine performance, the most logical place to start was the exhaust. Several aftermarket pipes were dyno-tested before deciding on a ZTechnik Z4031 titanium exhaust system. Although Zeller found several exhaust pipes that produced slightly higher top-end horsepower, they did so at the sacrifice of mid-range, upsetting the smooth, linear powerband of the BMW’s extraordinary in-line four-cylinder motor. Zeller explains that, “people buy on horsepower [figures], but they actually ride based on torque.”

 
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