By-All-Stars provides a 2-years warranty against defects in material and workmanship, valid only for the original buyer and vehicle. The warranty is non-transferable and excludes all shipping fees, which are the customer's responsibility. The buyer must inspect the product before installation and return any defective items within 30 days at their own expense. The warranty is void for damage due to improper installation, use, or modifications. Regular wear-and-tear is not covered by the warranty. The products must be installed by certified technicians to maintain warranty status.