If AMG’s manic creations simply aren’t enough for you, there are a very small number of models that have been improved to Black Series specification, and the SL 65 joins the ranks in 2009. Starting with the standard SL 65 AMG, already potently endowed with a twin-turbocharged V12, AMG mainly focuses on weight reduction. The folding hardtop and metal fenders, front bumper, and trunk are ditched for units made of carbon fiber composite, saving more than 200 lbs. (a lot of which was in the roof, so the center of gravity is lowered somewhat). Engineers also managed to enhance engine output by almost 60 horsepower, for a total of 661 horsepower (although torque, while still immense, is unchanged at 738 ft-lbs.). Performance is about what you’d expect given the modifications to the SL-Class, with a 0-60 time of well under 4 seconds and a top speed well in excess of 215 mph. It’s not a coupe for the faint-of-heart, but if you’re looking for a DTM-style driving experience without having to wear a fireproof suit every time you drive it, perhaps the SL 65 AMG Black Series is your car.
Limited to 350 units, the SL 65 AMG Black Series was introduced in 2009 as a high-performance special of the fifth generation SL-Class. Typical for Black Series models, which represent the fastest models of a particular AMG lineup, it sports aggressive styling inspired by DTM race cars and a staggering power output of 661 hp (493 kW), making it the most powerful production car by Mercedes-Benz to date.
The SL 65 AMG Black Series is powered by a six liter (5,980 cc) twin-turbocharged V12 engine, codenamed M275 AMG. Fitted with air-to-liquid intercoolers and operating at a boost pressure of 22.1 psi (1,52 bar), the engine delivers supercar-crushing numbers that include 661 hp (493 kW) at 5400 rpm and 738 ft·lb (1001 N·m) of torque from 2200 to 4200 rpm. A variation of this engine would later be used in the Pagani Huayra.
Using a rear-driving, five-speed automatic transmission with long ratios, the SL 65 AMG Black Series accelerates from 0 - 60 mph (97 km/h) in 3.9 seconds and 0 - 100 mph (161 km/h) in 7.9 seconds and is officially claimed to top out at 199 mph (320 km/h) with an electronic limiter, although it comes with an unlocked top speed of ca. 216 mph (348 km/h) in the Xbox One and Windows 10 generations of the Forza series.
To shed weight from the heavy SL Class platform, the SL 65 AMG Black Series uses carbon-fibre-reinforced plastics for various body parts, most notably its rollbar-fitted roof that replaces the folding metal roof from standard models. Nevertheless, due to a weight of 4215 lb (1912 kg), it is still one of the heaviest two-door cars in the Forza series, that is made up with a full coil-over suspension, a rear spoiler that deploys at 60 mph (97 km/h) for increased rear traction, 265 mm front tires, 325 mm rear tires, and large diameter compound brake discs.
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