The Alfa Romeo 4C (Type 960) is a small, lightweight, rear wheel drive sports car. Available in coupé and spider bodystyles, it uses a carbon fiber tub, front and rear crash box, and hybrid rear frame mainly out of aluminium to keep its weight at 895 kilograms (1,973 lb) and 1,050 kilograms (2,315 lb) in the United States. The chassis is composed of a central carbon fiber tub, with aluminium subframes front and rear. The carbon fiber tub is produced by TTA (Tecno Tessile Adler) in Airola, as a joint venture between Adler Plastic and Lavorazione Materiali Compositi. The carbon fiber components that make up the chassis are cut using CNC technology. The chassis of the car weighs 65 kilograms (143 lb) (Spider’s chassis weights 107 kilograms (236 lb)) and is a single carbon fiber body, similar to the body of many supercars. The outer body is made of a composite material (SMC for Sheet Moulding Compound) which is 20% lighter than steel. The stability is comparable to steel and better than aluminium.
The Spider version of the 4C was previewed showing a pre-production prototype at the 2014 Geneva Motor Show. Sharing its engine with the Coupé version, the 4C Spider has different external parts such as the headlights, exhaust and engine hood, as well as a different roof section that features a removable roof panel.
Alfa Romeo 4C Spider