Porsche revealed the latest Spyder model in April 2015 at the New York Auto Show. The styling of the car is similar to the previous generation Spyder, continuing the twin hump rear deck and manually operated canvas top. It also shares some styling with the Cayman GT4, using the same front and rear fascia. The engine is also shared with the Cayman GT4, a 3.8l flat-6, making this the largest capacity and most powerful engine used in a Boxster with 287 kilowatts (385 bhp). It is also the lightest current Porsche, weighing 1,315 kilograms (2,899 lb). This was achieved through the use of aluminum doors and rear lid, the manually operated roof and unique light weight 20 inch wheels. The air conditioning and audio system are also removed, although can be added as no cost options. Braking is via larger brakes than used on the Boxster S, being 340mm front and 330mm rear units taken from the 911 Carrera S. It also shares from the GT4 a limited slip differential combined with Porsche Torque Vectoring and features a 30mm lower ride height. Additionally it also borrows the steering rack from the 911 Turbo S along with the same reduced diameter GT steering wheel as used in both the GT3 and GT4. The only gearbox available is a 6 speed manual. The Spyder had a base price of US$82,100 and was only available as a 2016 model with a total worldwide production of 2400 units, 850 US.