4.5" B58 Downpipe For Supra 3.0T & BMW M340i, M440i, M240i, 340i, 440i, 540i, 640i, 740i, X3, X4, X5

Unleash Aggressive Sound & Performance with Our 4.5" B58 Downpipe Unlock the full potential of your BMW or Toyota Supra with the Palenon Performance Version II 4.5" Downpipe—engineered specifically for Gen 1 & Gen 2 B58 engines. Compatible with 2016–present BMW models—including the 340i, 440i, M340i, M440i, M240i, X5 40i, Z4, 540i, 640i, 740i—and the 2020+ Toyota Supra 3.0T, this high-flow downpipe is designed to replace the restrictive OEM catalytic converter and dramatically enhance turbocharger efficiency. Constructed from robust 304-grade stainless steel and featuring precision-formed 4.5” smooth radius bends, it delivers quicker turbo spool, increased horsepower, and a deeper, more aggressive exhaust tone. Its direct-fit design ensures easy installation and seamless compatibility with both OEM and aftermarket exhaust systems—making it the perfect upgrade for performance enthusiasts seeking maximum power and sound. Check Here If you have Gen3 Models Features Faster Spool: