Porsche has released the first photos of a new, lightweight version of it mid-engined Boxster roadster called the Spyder that is scheduled to make its world debut at the Los Angeles Auto Show in December. Following a similar formula to the iconic 550 Spyder of the 1950s, the new model replaces the standard Boxster’s retractable soft-top and all its associated mechanics with a simple and lightweight rag top that hooks up onto the windshield and the rear end of the car providing basic protection from the elements of nature.

The Spyder also gets a new ‘double bubble’ rear deck while other cosmetic tweaks include the re-trimmed front bumper and side air-vents, the new alloy wheel design and the larger fixed rear spoiler.

Almost everything about the third model in the Boxster family after the standard and ‘S’ versions is about shedding weight. Gone are the regular Boxster’s daytime running lights and fog lamps while the interior has been stripped out of any unnecessary features such as the air condition and audio system (though they are available optionally). The cabin also gets a pair of race-like door pulls and lightweight carbon-fiber seats.

Together, these weigh saving measures help shed 80 kg (176 lbs) off the Boxster S with the Spyder model tipping the scales at 1,275 kg (2,810 lbs).

The new model also gets a tuned version of Porsche’s 3.4-litre flat six boxer engine with direct fuel injection that produces 320 horsepower, 10HP more than in the Boxster S.

Equipped with the Porsche-Doppelkupplungsgetriebe (PDK) twin-clutch transmission and the Sports Chrono Package, the Spyder can go from zero to 100km/h (62mph) in 4.8 seconds (Boxster S: 5.0 seconds) and reach a top speed of 166 mph (267 km/h) with the roof removed.

The Boxster Spyder is scheduled for a worldwide launch in February 2010 with the base price in the Euro countries set at €53,100 (US $78,400). In Germany, if you add taxes and national specifications, the Spyder will retail for €63,404 or about 12 percent more than a Boxster S.