Pipe baffle set fits inside straight pipes. Baffles that are 2" denotes the size of the pipe into which they fit. Baffle s are 4" long.  Set is easily installed by drilling a single hole onto the backside of the exhaust. Sold in a quantity of 2. *Baffle diameter denotes the size of the pipe into which it fits. **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.  Fits: Custom application for straight pipes  UOM: 2 - PR   Size: 2 inch  Type: 4 inch  2011 Catalog pages: 244, 597, 612, 886, 890   SAV for Harley Davidson Motorcycles