These 2.75" diameter Tail Pipes feature single 4" round black chrome on T-304 stainless steel tips on each tail pipe. Using BORLA® Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Tail Pipes with Brawler style black coated T-304 stainless steel tips, or carbon fiber tips are also available. They will fit with either BORLA® 60742 Mid-Section / Muffler Assembly, or the Original Equipment (O.E.) mid-section / muffler assembly. BORLA® tail pipes include heatshields. O.E. tail pipes contain resonators. BORLA® tail pipes eliminate the resonators. Due to this they will increase the sound level somewhat compared to the O.E. tail pipes. Built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA® stands behind every Tail Pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.