2X Motorcycle Silent Baffle Exhaust Muffler for Shortcuts Staggered and Side Exhaust for Sportster Dyna NewMeasures 2. O.d. X 9 1/2 inches L x 1 1/2 inches I.D. Quiet baffles typically reduce sound by 2-3 dbNotes: it is recommended to install new exhaust gaskets and a suitable jetting kit when changing the exhaust system on a motorcycle motorcycle, or new exhaust gaskets and a digital fuel processor when changing the exhaust system on a fuel-injected motorcycle. Discoloration (blueing) is caused by tuning features such as cam timing, carb jetting, etc., and is not caused by faulty manufacturing. Material: Stainless SteelColor: SilverPackage Contents:2 x Exhaust Pipe MufflerOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.