Items can be returned within 60 days of receipt. If items were shipped in error or damaged in transit, American Racing Headers and Exhaust will pay for all return charges, and waive any restocking fees. However, if American Racing Headers and Exhaust shipped your order per your specifications but you would still like to return items, return shipping charges are the customer's responsibility, and a 20% re-stocking fee will apply. No refunds will be made until returns pass inspection. If the ARH system has been purchased through a dealer, please contact that dealer for their returns policy. If there are any problems during installation please contact ARH immediately, no modifications should be done without consulting an ARH representative. Any unauthorized modifications will void the warranty. Please contact us for a Return Authorization Number (RMA) and shipping instructions. For more information on our limited warranty please call 631-608-1986.