Khrome Werks HP-Plus 4.5 Tracer Tip Slip-On Mufflers For Harley Touring These 4.5 mufflers provide a deep low rumble that continues to win over the rider time and time again. With Dyno tested performance, you don't have to rely on the seat of the pants dyno to know that your engine is performing more efficiently. Features: Engineered for performance, style and sound Produce the Khrome Werks signature, authoritative tone without annoying high-frequency noises Improved torque and horsepower from the hit of the throttle Billet aluminum tips can be rotated 360 at 90 increments and feature a high-temp powder coated finish Bolt-in optional inserts available that comply with SAE J2825 sound test with no appreciable loss of performance Sold in pairs Finishes: Chrome: The classic chromium electroplated finish that we all know and love Smoked Chrome: A darker version of the classic, but not full dark Eclipse: The darkest chrome finish available Obsidian Black: A premium ultra-gloss black