Acerbis Fork Gaiters. Acerbis Upper Fork Guards. Not satisfied with just protection, Acerbis R and D designed these upper fork guards to improve airflow past the fork into the radiator. This effort to maximize airflow to the radiator can be found on several new Acerbis aftermarket products. (Not fit KTM 2008/9)  ? Material: 100% Polypropylene ? Comes with plastic rivets and decals for mounting on the forks