All merchandise manufactured by Samson is guaranteed against manufacturing defects for a period of ONE year from the date of invoice. Caliber exhausts systems have a TWO year warranty. Samson makes no warranty as to any type of sound or pitch. Discoloration is caused by tuning characteristics, cam timing, carburetor jetting, overheating, etc., and is not caused by defective manufacturing therefore there will be no warranty on exhaust pipes and mufflers with regards to discoloration. Samson will not warranty any product that shows customer neglect or abuse, rust will not be covered. Samson will not warranty any product that has been modified by any operation, abuse or any other misuse of the product. All Samson exhaust systems are designed to fit on stock motorcycles, fitment on custom motorcycles is not assured. Any and all Samson exhaust systems that have been mounted to a motorcycle other than for its original intent will not be covered through warranty. Warranties will be honored by Samson with the direct purchaser only. All warranty related issues require the end purchaser to deal with the dealership where the product was purchased. If you purchased directly from Samson you may call Samson directly for assistance. Samson reserves the right to replace, or issue credit for defective merchandise at our discretion. There will be a minimum 15% restocking fee on all returned merchandise. No credit will be issued for labor and other costs incurred beyond the cost of the original product. Proof of purchase such as original invoice must accompany all warranty claims. A Return Authorization number must be issued before merchandise is returned for a warranty claim. Defective merchandise must be sent to Samson freight prepaid. Upon inspection and determination of a valid claim, Samson will replace the defective merchandise and return it via ground shipment.