WCE BMW Gen 1/2 B58 Downpipe 4.5"

Regular price $299.00
Quality Content
Quality Content

Take your B58-powered BMW to the next level with the WCE 4.5" Catless Downpipe, built for serious performance, aggressive sound, and maximum airflow. Whether you're running a stock turbo or an upgraded setup, this downpipe is the ideal solution for unlocking horsepower, torque, and quicker spool.

Crafted from high-quality 304 stainless steel, the WCE downpipe is engineered to handle high heat and resist corrosion over time. The massive 4.5" diameter and mandrel-bent tubing ensure smooth, unrestricted exhaust flow. A built-in flex section adds vibration control and easier fitment.

By removing the restrictive factory catalytic converter, this catless design drastically reduces backpressure, improves throttle response, and delivers a deep, aggressive exhaust tone — all while offering direct bolt-on installation and compatibility with both Gen 1 and Gen 2 B58 engines.


Key Features:

  • Massive 4.5" piping for maximum exhaust flow

  • Catless design for improved power and turbo response

  • Gains of up to 30whp on stock turbos, more on upgraded setups

  • 304 stainless steel construction with smooth mandrel bends

  • Integrated flex section for better fitment and reduced vibration

  • Compatible with RHD and LHD vehicles

  • Direct bolt-on installation with OEM or aftermarket exhausts

  • Spot-on fitment with no cutting or welding required

Quality Content

We try to keep all the products that are listed our site in stock, with short lead times, but with so many product offerings, it's not always possible to do so.

Products are kept in stock with our vendors, distributors, or partnered warehouses.

Please note: some products are custom made. For these products, check product description for lead times.

To check item stock or lead time please contact our support staff.

Orders are processed within 1-5 business days after order placement. Business days are Monday-Friday.

Most orders are delivered within 7-10 business days of order shipment.

Please note: some products are made to order or have longer lead / shipping times. Review product description for this information.

If product is out of stock or has longer lead time we will notify you.

To review fitment, check the fitment tab on the product description.

If you're still unsure, please contact our support staff.