Uproar Customs 4.5" Catless Downpipe | BMW B58

Uproar Customs 4.5" Catless Downpipe BMW B58 Platform Engineered for enthusiasts who demand maximum performance, the Uproar Customs 4.5" Catless Downpipe is designed to unlock the full potential of your BMW B58. Featuring a massive 4.5-inch free-flowing design, this downpipe significantly reduces exhaust backpressure, allowing your turbo to spool faster while delivering an aggressive exhaust note and improved throttle response. Manufactured from premium T304 stainless steel and finished with the laser-engraved Uproar Customs logo, this downpipe is built for performance, durability, and OEM-quality fitment. Whether you're running a stock turbo or a high-horsepower setup, it's the perfect upgrade for enthusiasts looking to maximize airflow and power. Designed as a direct bolt-on replacement for the factory downpipe, it installs using the factory mounting locations for a clean, hassle-free fit. Features Exclusive Uproar Customs laser-engraved branding Massive 4.5-inch catless design Premium T304 stainless steel construction TIG-welded for maximum strength and durability Increases exhaust flow Faster turbo spool Improved throttle response Aggressive turbo and exhaust sound Supports stock and upgraded turbochargers Precision OEM-style fitment Direct bolt-on installation Vehicle Fitment 2019–2023 Variant BMW M340i BMW M440i BMW M240i BMW X3 M40i BMW X4 M40i BMW Z4 M40i Toyota GR Supra 2024+ Variant BMW M340i BMW M440i BMW M240i BMW X3 M40i BMW X4 M40i BMW Z4 M40i Toyota GR Supra Please select the correct model year before ordering. Availability In Stock & Ready to Ship Processing & Shipping Orders are processed within 1–2 business days. Ships directly to your door with an estimated delivery time of 2–9 business days. Installation Professional installation is recommended. ECU tuning is recommended after installation. A Check Engine Light (CEL) may occur on vehicles without proper tuning. This product is intended for off-road or motorsport use where permitted by law. Uproar Customs does not provide installation instructions or technical support for self-installation.