E187 91151133101 91151133100 Rennline’s fully mechanical hood strut will not fail for the life of the product, and therefore carries a lifetime warranty. It utilizes a billet design with complex machining to ensure a smooth and reliable operation. It’s available with either a carbon fiber body or a black aluminum body to suit your style. For cars with steel hoods, we recommend two struts as the factory hinges flex when only 1 strut is used. For aluminum or carbon fiber hoods, only one strut is required. Price is for 1 strut.