GMS carbon side scoops will create ram-air effect and add air flow to your engine to feed your air intake, and effectively increase intercooler efficiency. That will result in stable power through intensive tracking or dyno runs. Do not let your car be a single run dyno queen that will suffer performance loss due to the heat soak. Or perhaps if you are not racing or tracking your 4C and your beautiful 4C is seducing you just by its sleek design and looks, then GMS carbon side scoops will add that extra admiring touch to your 4C. Two separate parts joined into a beautifully shaped single piece carbon scoop that fits to the 4C body perfectly. 100% 2x2 Twill 3k carbon fibre, tempered and cured, hand layered and 3x clear coated layer for a superior glossy mirror finish. Body panels of Alfa Romeo 4C are moulded from SMC (fiberglass sheet moulding compound) so there are some dimension tolerances to be expected from car to car. Professional bodyshop is suggested for installation (removal of the rear flank and securing the scoops with rivets or adhesive).