Description

Unlock unparalleled performance for your BMW M5 or M8 with the Untd. Performance Catless Downpipe. Designed specifically for 2017-2021 BMW M5 F90, M8 F91/F92/F93, and equipped with the S63 engine, this downpipe provides significant improvements in exhaust flow, power, and overall driving dynamics. By removing the restrictive factory catalytic converter, this high-performance upgrade reduces turbo lag, enhances throttle response, and increases horsepower—delivering a more aggressive driving experience.

Crafted from premium 304 stainless steel, this downpipe is engineered for high durability and long-lasting performance, even under extreme conditions. Whether you’re on the street or the track, the Untd. Performance Catless Downpipe is ready to take your BMW M5 or M8 to the next level.

Key Features:

Catless Design for Maximum Power
The catless design eliminates the catalytic converter, which reduces exhaust backpressure and significantly improves exhaust flow. This modification allows for faster turbo spool, quicker throttle response, and a noticeable increase in horsepower and torque—ideal for performance enthusiasts seeking unfiltered power.

Aggressive Exhaust Sound
With the catalytic converter removed, the exhaust note of your S63 engine becomes louder, deeper, and more aggressive. Turbo spool and crackles become more pronounced, turning your BMW M5 or M8 into an audible powerhouse. Expect a motorsport-inspired sound that will excite drivers and onlookers alike.

Durable Stainless Steel Construction
Made from 304 stainless steel, this downpipe is built to endure the intense temperatures and stresses of high-performance driving. The corrosion-resistant material ensures a long lifespan, maintaining its strength and appearance even after repeated use in demanding conditions.

Improved Turbo Efficiency
The reduction of backpressure allows your turbochargers to spool faster and more efficiently, resulting in reduced turbo lag and more responsive power delivery. You’ll experience smoother acceleration, quicker throttle response, and an overall improvement in both low-end torque and top-end performance.

Optimized for Track Performance
Designed with track and enthusiast-level driving in mind, this downpipe is perfect for high-performance applications where emissions compliance is not required. It’s engineered to enhance power and efficiency during spirited driving, racing, and dyno tuning.

Compatibility:

• BMW M5 F90 (2017-2021)

• BMW M8 F91/F92/F93 (2017-2021)

• Engine: S63 4.4L V8 Twin-Turbo

• Chassis: F90/F91/F92/F93

• Style: S63 Style 1

Note: This downpipe is designed specifically for the S63 Style 1 engine and is not compatible with other engine variants.

Benefits:

• Substantial Power Gains: Improved horsepower, torque, and throttle response, with faster turbo spool and reduced turbo lag.

• Aggressive Exhaust Tone: Enjoy a deeper, more aggressive exhaust note with enhanced turbo spool and crackling sounds.

• Built to Last: Made from 304 stainless steel for superior durability and resistance to corrosion.

• Faster Turbo Spool: Reduced backpressure allows for quicker turbo spool, resulting in more immediate power delivery.

• Track-Ready Performance: Perfect for racing, dyno tuning, and off-road use where emissions compliance is not required.

Note: This product is intended for off-road and track use only. It is not emissions-compliant in all regions. Please check local regulations before installation.