To counteract high-speed camshaft chain vibration, the higher-revving SLK350
Sport engine comes with tri-oval chain sprockets. Above 6,300 rpm, the tri-oval
sprockets generate inversely phased pulses that tend to neutralize the usual
vibration. For maximum air flow at high rpm, the Sport engine also makes use of
a single-stage intake manifold, and valve timing has been advanced slightly to
preserve its broad power range.
The SLK350 can be ordered with a Sport
package that includes AMG body styling, sport suspension, steering-wheel
gearshift paddles and 18-inch AMG wheels. The Sport package includes AMG's
automatic "throttle-blipping" feature for virtually jolt-free downshifting,
which reduces load-change handling response, and for motorsports-minded drivers,
improves braking before turn-in.
Coupe to
Topless Roadster in Only 22 Seconds
With the first retractable
hardtop in modern times, the SLK started an industry trend toward hardtop
convertibles that's still going strong. After shaking up the small roadster
market when it was introduced more than ten years ago, the second-generation SLK
wowed the public again when it hit U.S. streets in 2004. The retractable hardtop
of the SLK sets it apart from the competition. With the top up, it's a quiet
coupe - push a button, and the car goes topless.
The SLK roof goes up or
down in 22 seconds, and the folded roof takes up surprisingly little trunk space
- thanks to its pivoting rear window. Like the retractable hardtop of the larger
SL model, the rear window of the latest SLK swivels to match the curvature of
the top, providing nearly three more cubic feet of trunk room than its
predecessor.
One of the Safest Open Cars
The SLK is
considered one of the safest roadsters in the world. In addition to its
integrated roll bars and two-stage front air bags for both the driver and
passenger, the SLK is also equipped with dual knee bags and head-thorax air bags
which are located in the seat backs and can deploy above the top of the seat
back to help provide better head and neck protection, similar to the
curtain-type air bags on hardtop Mercedes models.
Like all Mercedes-Benz
passenger vehicles, the SLK comes equipped with ESP stability control, a
Mercedes innovation that can help prevent slides and spins, especially in
slippery weather. ESP can detect an impending spin or slide and prevent it by
applying the brakes to individual wheels or reducing engine power. In addition,
full-range traction control helps to provide safer travel on slippery road
surfaces.
The SLK's unibody uses an impressive amount of high-strength
steel alloy - 42 percent of the total structure - and the entire body shell is
zinc-coated for long-term corrosion protection. The SLK also makes use of a
scratch-resistant clearcoat paint that was initially developed in the nano-technology
sector.
AIRSCARF For An Extended Driving Season
The
optional AIRSCARF system can extend the open-air driving season into the cooler
months. Built into the seatbacks of the SLK, the neck-level heating system blows
warm air from the head restraints of the driver and passenger seats, allowing
occupants to cruise comfortably with the retractable hardtop open in cooler
weather. AIRSCARF even compensates automatically for changes in vehicle speed.
Mercedes-Benz SLK350: Photo Gallery, Review (1/2) and Specifications