Part Number: 30-0138 UOM: 1 - EA Summary:Chrome 18" straight fishtail extension has an outer diameter of 1-7/8" to fit over 1-3/4" pipes. The straight thru design lets your engine breathe and has a great sound. Order clamps separately. **CAUTION: These exhaust products are not legal for sale or use in California on pollution controlled vehicles. These products are intended for non-highway only. Size: 1-3/4 inch Fitment: Custom Application for 1-3/4" pipes. Tech. Notes:Suggested to use #31-2105 hangers and #31-2103 end clamps.Measurements: Length: 5-5/8" Width: 1-1/2" Country of Origin: Imported