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This is the fastest convertible GT you can buy. The Turbo S cab gets 572 bhp (39 hp more than the base turbo cab) and 553 ft lbs (9 ft lbs more than the regular cab) of torque. With the Turbo S, the PDCC Porsche Dynamic Chassis Control hydraulic roll bars came as standard. The PCCB Porsche Ceramic Composite Brakes had been standard on the Turbo S already since the 996 generation. New options included the radar-based lane change assist and a lift system for the front axle (increased ground clearance by 1.6″/40 mm). The PCM now had a multi-touch screen like in the facelifted 991 Carrera.
Sticking to their strengths, Porsche has created the most sought after car in its line-up, the 2017 Porsche 911 R. We have seen numerous rumors about this car for a couple of months now and this time we finally get to see it. The new Porsche 911 R with 4-litre naturally aspirated flat-six engine with a six-speed manual gearbox is coming to us for sure. It's lighter and faster with its engines pumping out 493 bhp at 8,250 rpm and 333 lb-ft at 6,250 rpm. The result is probably the best 911 of the modern era. Porsche at its finest. 
As the rules do not permit higher output engines, the engine for the 991 RSR was taken from the 997 GT3 RSR 4.0 and the development work focused on the chassis, body, aerodynamics and the gearbox. A wishbone front suspension replaced the McPherson struts used in 997. A new development was the lightweight gearbox. One of the priorities in the development was the more evenly balanced weight distribution. The centre of gravity was lower, too.
Porsche 911 GT America (991)
The 911 GT America was based on the 991 GT3 Cup. It was built exclusively for the United Sports Car Racing (USRC) series and its GT Daytona class for 2014. While the GT3 Cup had a 3.8-litre engine at the time, the GT America was fitted with a 4.0-litre unit developing 351 kW. The main visual difference is the rear spoiler made to fit the USRC rules. Like the GT3 Cup, the GT America has 380 mm steel brake rotors at the front axle with 6-piston fixed calipers.
The new Porsche 911 GT3 Cup is powered by a 3.8-litre six-cylinder flat engine. It generates 460 hp (338 kW) at 7,500 revs, surpassing the predecessor by 10 hp. A six-speed dog-type gearbox developed by Porsche Motorsport which is operated via shift paddles at the steering wheel for the first time in a Porsche brand trophy race car transmits the power to the rear axle. The single piece race wheels with centre mount were also new.
Porsche offered the 991 Turbo S from the start of the production of the 991 Turbo. The unique features of the Turbo S were the GT3 mirrors, slightly different front spoiler grilles and interior features. As before, the Turbo S was a heavily equipped version of the Turbo. The powerkit added 29 KW of power and the following equipment came as standard: PDCC hydraulic rollbar system, Sport Chrono (Launch control and 0.15 bar overboost functions), dynamic engine mounts, PCCB Porsche Ceramic Composite Brakes, central lock wheels, full LED dynamic headlights, 18-way Sport Plus seats with memory.
This was the fourth version of the 991 RSR - the first two came with the rear engine, then the first mid-engine version was launched (all 4.0-litre) and finally the mid-engined RSR 4.2 with the largest 911 engine ever made. The increase in the engine capacity is a question mark as on production models the capacities are decreased and turbochargers are used. The 991 RSR 4.2 didn't have anything in common with the production cars anymore. No change in terms of power-to-weight ratio.
The GT2 RS's reputation as the most powerful street-legal car is as monstrous as this comprehensive guide. Suffice to say, this supercar has been built with the best Porsche has to offer. It's not bragging, it's just facts. There is no doubt that the new GT2 RS is the pinnacle of the 911 in terms of performance. It is simply the fastest 911 in history, and that’s a fact. It is the quickest production car to lap the Nürburgring Nordschleife. It is the most powerful 911 ever made.
Thought it carries a similar design to the new 911, the Carrera 4 has its own unique features, the most obvious being an AWD system hooked up to its new turbocharged 3.0-liter flat-six engine. The C4 gets a spate of new goodies, including a unique taillight section, and an updated infotainment system that brings the sports car’s connectivity to a whole new level. Inside the new 911 Carrera 4, there are only a few changes, the most important is the new infotainment system. With 370 hp on tap from the direct-injection, twin-turbo flat-six and all-wheel drive putting all those ponies to the ground, the C4 is more than quick enough.
Porsche purists might moan that the flat-six engine in the rear is no longer naturally aspirated, but with more power and torque, improved efficiency and some advanced interior tech giving this 911 an even bigger breadth of ability than before, this facelifted 991-generation model carries on where the old car left off. Sure, it’s lost a touch of that high rev zing from the old car, but if you add the sports exhaust, the bark from the engine inside and out is still intoxicating. And so is the speed. The 991.2 Carrera S is absolutely amazing on both road and track and still the best sports car around.
Porsche will only build 30 examples of the Clubsport 25. Mechanically, it's similar to the regular GT2 RS Clubsport. It makes the 691 horsepower from a twin-turbocharged 3.8-liter flat-six. But it gets many, many changes to the exterior and even the cooling system. As you can clearly see, the body has been lengthened, and it has also been widened. The latter is necessary to house the wide, low-offset 18-inch wheels taken from the Porsche 935, though without the aerodynamic covers.
The GT3 R has always been placed between the GT3 Cup and the very expensive RSR. All the 991.2 racing cars have normally aspirated 4-litre engines. Compared to the 991.1 GT3 R, the 991.2 GT3 R engine offers a broader usable rev range and the engine response is more precise due to 6 throttle butterflies. The roof, front hood and fairing, wheel arches, doors, side and tail sections, rear lid and interior trim are made of carbon-fibre reinforced plastic. Gets new double wishbone suspension.
To celebrate 60 years of Porsche Club of America, PCNA (Porsche Cars North America) ordered 60 units of 911 Carrera GTS Coupés in Club Blue from Porsche Exclusive. All 60 cars were equipped with SportDesign aerokit (including ducktail). These Club cars were not numbered because it wasn't a special series by Porsche AG, but a series of similarly equipped cars ordered by PCNA. The cars got a few unique touches by Porsche Exclusive, like the special "Club Blau" paint, the "Club Coupe" stickers on the doors, the door entry guards with ''GTS Club Coupe" lettering and number "60" embossed on the armrest cover.
This is the open-top model for those who don’t want the full convertible experience – and it’s only available in the wide-hipped four-wheel drive bodyshell. The new Targa is a striking design, echoing the 1965 original with its fixed rollover bar. The Targa 4S, gets you the more powerful 3.8 engine from the Carrera S. It mixes regular Carrera 4S go with a sense of style and everyday usability (those occasional rear seats, the real possibility of 30mpg in everyday driving). Great car.
2019 911 speedster
Make no mistake that the Speedster is an absolutely fitting conclusion to the 991-generation. The Porsche 911 Speedster is an ingenious amalgamation of the latest technologies on offer, and the more simple ingredients that have been a principle of driving enjoyment since the invention of automobiles. A 502-horsepower engine, without turbochargers. A modern transmission, with just one clutch. A state-of-the-art suspension and chassis, with an unsullied purity. The list goes on. Perhaps the only drawback is that the Speedster’s rarity and price.