according to the present invention , there is provided a secondary engine cover formed from a polymeric material comprising a wear indicator . it is recommended and encouraged that teams , and track day public , replace the secondary engine cover after each and every crash , to ensure the best rider safety possible . however , because of some products inherent high performance and durability , this good practice has not always been followed . some deem that it is not always necessary to change , a practice that it is not wished to encourage and which should be changed . in this invention , wear indicators are created in one alternative in the form of round holes appearing in on the top surface of the secondary engine cover when crucial areas of material of the secondary engine cover have been worn down . this allows scrutineers and team technicians and riders to evaluate the secondary engine covers visually , and base their decisions on what they see easily , should the secondary engine cover not be replace automatically after a fall or crash as recommended .