Maximize the power and performance of your BMW M5 F10 or BMW M6 F13 with the Untd. Performance Catless Downpipe. Designed specifically for the S63 4.4L Twin-Turbo V8, this downpipe features a high-performance, catless design with an integrated flex-pipe for improved durability and enhanced exhaust flow. Whether you’re building a race car or tuning for the street, this downpipe delivers unmatched turbo performance, quicker spool times, and aggressive sound.
Key Features:
Catless Design for Ultimate Exhaust Flow
The Untd. Performance Catless Downpipe removes the restrictive factory catalytic converters and features a straight-through design for unrestricted exhaust flow. This optimized setup drastically reduces turbo lag and backpressure, resulting in a quicker, more responsive turbocharger, increased horsepower, and torque gains across the entire RPM range. Ideal for heavily tuned setups and high-boost applications.
Integrated Flex-Pipe for Enhanced Durability
This downpipe comes equipped with a flex-pipe, which provides improved flexibility and ensures that the downpipe can handle the heat and pressure generated by high-performance driving without cracking or failure. The flex-pipe also helps reduce vibrations, protecting the exhaust system from potential damage under heavy load or stress.
Increased Turbo Response & Performance Gains
With the catless design and unrestricted exhaust flow, your S63 engine will experience faster turbo spool, more aggressive throttle response, and a noticeable increase in power. Expect a significant bump in both horsepower and torque, giving your M5 or M6 the added performance needed to dominate on the track or the streets.
Aggressive Exhaust Sound
Eliminating the catalytic converters and increasing the pipe diameter allows for a louder, more aggressive exhaust note. This setup enhances turbo spooling sounds and creates a distinctive crackling and popping sound on deceleration. If you’re looking for a race-inspired sound, this downpipe delivers.
High-Quality Stainless Steel Construction
Built from premium 304 stainless steel, the Untd. Performance Catless Downpipe is designed to withstand extreme temperatures and pressures. It’s TIG-welded for strength and durability, ensuring a leak-free fit. The downpipe is built to last, with a corrosion-resistant surface that holds up to the rigors of high-performance driving.
Direct Bolt-On Fitment
The downpipe is designed for a direct bolt-on installation with no modifications required. It bolts directly to the S63 engine turbos and mid-pipes, making the installation process quick and easy. This downpipe is engineered to fit seamlessly into your BMW M5 F10 or M6 F13 with a hassle-free setup.
Track-Ready, Emissions-Delete Setup
This catless downpipe is specifically designed for off-road and motorsport use. It is perfect for drivers who are building a track-focused vehicle or a high-performance street car and do not need to meet emissions regulations.
Compatibility:
For BMW M5 F10 and M6 F13 owners who want to unlock the true performance potential of their S63 engine, the Untd. Performance Catless Downpipe with Flex-Pipe is the perfect upgrade. Featuring a high-flow, catless design with a built-in flex-pipe, this downpipe ensures faster turbo spool, enhanced performance, and an aggressive exhaust sound—ideal for enthusiasts looking for maximum power and throttle response.
⚠️ Note: This product is designed for off-road and track use only. Not emissions-compliant in all regions. Please check local laws and regulations before installation.
