The removable roof consists of two carbon fibre panels, weighing 6 kg (13 lb) each, which required the reinforcement of the rear pillar to compensate for the loss of structural integrity as well as to accommodate the rollover protection and ventilation systems for the engine. The panels are easily removable and are stored in the front luggage compartment. The Aventador Roadster has a unique engine cover design and an attachable wind deflector to improve cabin airflow at high speeds as well as a gloss black finish on the A-pillars, windshield header, roof panels, and rear window area. With a total weight of 1,625 kg (3,583 lb) it's only 50 kg (110 lb) heavier than the coupé (the weight of the roof, plus additional stiffening in the sills and A-pillars). The base price of the car is US$441,600.