Touring Cat-Back™ Exh Sys. 2014-2021 Toyota Tundra 4.6L/ 5.7L V8 Auto. Trans. 2WD/4WD Reg. Cab With Long Bed (8' 2") 145.7" WB/Ext. (Double) Cab With Standard Bed (6' 7") 145.7" WB/Crew (CrewMax) Cab With Short Bed (5' 7") 145.7" WB.

Muffler contains an internal H-Pipe for increased performance and improved sound. 140638 is a full True Dual, split rear exit, Cat-Back(tm) system with 4" black chrome on T-304 stainless steel tips. Using Borla(r) Stainless Steel Polish p# 21499 is NOT recommended with these black chrome tips. Bright chrome on T-304 stainless steel tips are also available. We suggest cleaning the tips with hot water and a microfiber cloth. Bright chrome on T304 stainless steel tips are also available. Borla(r) Cat-Back(tm) and Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is 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(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.