The Aerokit Spec R series is designed to produce minimal air resistance and maximum downforce. Using a lighter resin to achieve a lighter product whilst still maintaining optimal strength it comes in handy to shave those precious seconds off lap times. Designed with track and race use in mind the Aerokit Spec R series not only looks the part, its actually a great weight saver too! Front Bumper fits both prefacelift 911 996 and Boxster 986. Sideskirts fit all 996 models. Rear bumper fits all 996 models.