If you want great looks and sound for your Indian motorcycle, look no further. These 4" Round Twin Slash Slip-On mufflers from Vance & Hines offer an all-mechanical straight-through louvered baffle, which boosts power and gives your bike a beefy, unmistakable sound. These slip-ons are also sold in pairs to ensure you get the best value when upgrading your bike.; ; 4" round mufflers Signature Twin Slash end treatment Optional Quiet Inserts Chrome Mounting hardware & Installation instructions are included