6.4 L/100 km / 15.7 km/l / 37 US mpg / 44.4 Imp mpg
Braking 100 km/h - 0
36 m / 118 ft
Standing
¼ Mile
13.1 sec / 156 km/h / 97 mph
Top Speed
169 km/h / 105 mph
D0 NOT BUY THIS MOTORCYCLE. DON'T
EVEN THINK ABOUT IT.
Steer clear. Move on before it's too late. Turn the page.
Nothing good can come of it. KTM's Duke, the first pure streetbike the tiny
Austrian firm has sold in the U.S., is a diabolic device that will land you in
hot water quicker than Senator Bob PackWood at a panty raid. This bike is
609cc worth of stonkin' Single that lives for three things and three things
only: 1) wheelies, 2) stoppies and 3) rorty romps through the gearbox. The
meek may inherit the Earth, but they won't be riding around on KTM Dukes.
You can thank ABC Sports for the Duke. It's a direct
descendent of the hybrid racebikes used in the early-'80s made-for-TV "Superbikers"
shows. Run on a half-dirt, half-asphalt course, these were mainly big-bore
two-stroke motocrossers with shortened suspensions, roadracing front brakes
and tlat-track tires. Several years after the show went off the air,
Superbikers racing was rediscovered by the Europeans-in particular the French,
apparently unsatiated by old Jerry Lewis movies and "Baywatch" renins, and
casting about for another American art form to adopt. "Supermotard" was born,
soon to grow into a series with a season-ending finale that now attracts
big-name racers from all over the world
All of this did not go unnoticed by KTM back home in
Mattighofen at the foot of the Bavarian Alps. When the European show circuit
rolled around in 1993, there on the KTM Sportmotorcycle AG stand, among the
MXers and the enduros, was a curious-looking concept bike with supermotard
styling. Reaction from the press and public was so strong that KTM put the
bike on the books for 1994; now a limited number of Dukes have been brought to
the U.S.
Not much has changed from that 1993 concept bike. The Duke's
chassis is based heavily on the company's off-road frame, gussied up with a
polished aluminum swingarm. The fuel tank is the same 3-gal-lon vessel used on
the dirtbikes, molded in black plastic this time. Sheathing the sides of the
tank and sweeping forward around the twin radiators are plastic shrouds
finished in a very tasty gray-on-black checkerboard pattern meant to resemble
carbon-fiber. Sidepanels and rear lender were also pulled from the dirtbike
molds, set off by dark metallic-gray paint and more faux-fiber. A graceful
pair of passenger grabrails bolts to the rear fender, and a nicely done
subfender/chain-guard mates to the swingarm.
Leading this assemblage down the road is the Duke's most
radical derivation from its dirtbike roots. The Dutch-made 40mm WP Roma fork
is roadrace-quality stuff, mated to a similarly serious Brembo four-piston
caliper. The latter, plumbed with a plastic-wrapped steel line, is capable of
brutally severe stoppage-witness coverboy D. Canet standing the Duke on its
nose like a trained circus seal.
Topping the whole affair is an organically styled fairing that
incorporates twin headlights, tachometer, speedometer, ignition switch/fork
lock and a small cluster of warning lights. The speedo and tach faces are
particularly touchy-feely, with numbers done in a lilting, script type-style.
Also, the tach doesn't read in anything as clinical as rpm; it records "beats
per minute." Disregard the bold "620cc" emblazoned on the fairing's sides, by
the way, truth-in-labeling being a somewhat loose concept in Austria-the
Duke's 101 x 76mm bore and stroke works out to an actual 609cc.
Akront supplies the Duke's jaunty wire-spoked rims,
17-inchers, wide enough-at 3.5 inches front, 4.5 rear-to qualify for sportbike
duty. Spooned onto these are limited-production Pirelli MT60 radials that,
true to the supermotard theme, resemble dirt-track tires. These proved
surprisingly grippy, the downside being accelerated wear, especially at the
rear, and the fact that the MTs will most likely need to be special-ordered
come replacement time.
The end result of all this cross-bred styling is a motorcycle
with an undeniable flair-part dirt-slinger, part roadster, with a touch of
Bat-bike thrown in for good measure, all put together with a level of
fit-and-finish that rivals anything being built today.
That degree of refinement does not, however, extend to the
Duke's engine. It was built for enduro and motocross competition, so it's
fairly uncivilized for a street motor, which gives the bike a certain hooligan
charm, but doesn't make it very suitable for around-town plonking or
steady-state highway cruising. The Duke is happiest when it's pulling hard
through its slick-shifting five-speed gearbox, revs zinging between 5000 and
8000 rpm (redline is 8500), cutting loose with the splendid sound that only a
lightly muffled, high-.revving Single can generate-think of a BSA Gold Star on
crystal-meth.
Fair enough; KTM makes no pretense that the Duke is anything
other than "an unashamed street fighter...not for sissies...designed for the
experienced enthusiast...built with true connoisseurs in mind," to quote the
company literature.
In KTM's view, electric start has no place on such a he-man's
machine, so the Duke has to be kicked to life. The good news is that the LC4
motor is one of the easiest-starting big-bore Singles ever. Retract the
sidestand, making sure the double-spring-loaded apparatus-mandated by some
well-meaning Euro-crat, no doubt-doesn't thwack you in the shin and draw
blood. Swing the left-side kick lever out. Then, standing off to the side of
the bike, kick with your right boot. Aided by an automatic compression
release, the engine will almost always light off on the first or second
kick-unless, of course, friends and family have gathered 'round to admire your
vaunted kick-starting prowess, in which case all hope is lost....
CWs test Duke, the first California-spec model,
had its 49-state Dell'Orto carb yanked in favor of a cleaner-running 38mm
Edelbrock Qwik Silver II mixer. A derivative of the old Lectron carb, this
uses a flat slide and a single needle-no jets. Officials of both companies
admit that the Qwik Silver underwent-let's be kind here-an accelerated
development program for use on the KTM. As such, the Duke's carburetion was
less than ideal, with a hiccup or two in the powerband and the occasional
dreaded flame-out at stoplights. Apparently, the hot tip is to fit a 40mm Qwik
Silver, but don't let the California Air Resources Board know where ya heard
that.
Other than the carb niggles, the Duke worked as anticipated,
sling-shotting around corners and annihilating apexes the way any all-up fully
gassed 340-pound street-tracker with near-limitless Ground Clearance should.
If the KTM pays any penalties for its dirtbike upbringing, it's in a
relatively high center of gravity; two byproducts of this being a seat height
of 35 inches and a slight reluctance to be slammed hard-left, hard-right (or
vice versa) during on-the-limit cornering.
KTM will import 80 Duke 620s this year, priced at a
super-stiff $7900. It's a motorcycle for people who understand the allure of a
performance Single, who like to be different, who want a bike with balls. And
if you hurry, there might just be a few left that are unspoken for.