Contact customer service to obtain a Return Material Authorization number directly from customer service at (631) 981-1918 (World Products) or (631) 737-0372 (Bill Mitchell Hardcore Racing Products) for any warranty return. DO NOT RETURN PARTS WITHOUT AUTHORIZATION. Returned product must be shipped prepaid. Collect shipments will be refused. Returned parts must have RMA number on the outside of the package, a copy of original bill of sale inside and a written explanation of the suspected defect. If the item is found defective, World Products / Bill Mitchell Hardcore Racing Products will repair or replace it at its discretion and return it freight prepaid. No additional labor claims will be paid. There will be no exceptions to this rule. Items shall be shipped to 51 Trade Zone Court, Ronkonkoma, NY 11779.