$600.00
Unleash next-level performance from your BMW X3M or X4M with the Untd. Performance Catless Downpipe. Designed specifically for the F97 X3M and F98 X4M equipped with the high-output 3.0L twin-turbo S58 engine, this race-inspired downpipe eliminates the restrictive factory catalytic converters to deliver maximum exhaust flow, quicker turbo response, and a raw, aggressive exhaust note that commands attention.
Available on backorder
Unleash next-level performance from your BMW X3M or X4M with the Untd. Performance Catless Downpipe. Designed specifically for the F97 X3M and F98 X4M equipped with the high-output 3.0L twin-turbo S58 engine, this race-inspired downpipe eliminates the restrictive factory catalytic converters to deliver maximum exhaust flow, quicker turbo response, and a raw, aggressive exhaust note that commands attention.
Catless Design for Maximum Flow
Remove the factory bottlenecks and let your S58 breathe. The Untd. Performance Catless Downpipe replaces the restrictive OEM catalytic converters with a full 3-inch free-flowing design, dramatically reducing backpressure and unlocking the full power potential of your twin-turbocharged X3M or X4M. Perfect for tuned builds and performance-focused drivers.
Aggressive, Motorsport-Inspired Sound
Going catless means your S58 gets to sing. Expect a deep, powerful growl with more pronounced turbo spool, crackles, and pops. The untamed exhaust note from your F97 or F98 BMW is a head-turning upgrade that matches the vehicle’s high-performance DNA.
Faster Turbo Spool & Increased Power
With reduced restriction and optimized flow, this downpipe allows your turbos to spool faster and more efficiently. The result is improved throttle response, stronger midrange torque, and higher peak horsepower. Combined with a proper tune, expect substantial gains and sharper acceleration throughout the RPM range.
Track-Proven Durability
Constructed from premium 304 stainless steel and TIG-welded for strength and thermal stability, this downpipe is built to handle the extreme heat and pressure of high-performance driving. CNC-machined flanges ensure a perfect, leak-free fitment every time.
Direct Bolt-On Fitment
Installation is made simple with a direct bolt-on design that fits seamlessly to factory turbo and mid-pipe connections. No cutting or welding required—just bolt it in, tune accordingly, and unleash the beast.
BMW X3M F97 (2020–2023)
BMW X4M F98 (2020–2023)
Engine: S58 3.0L Twin-Turbo Inline-6
✅ Optimized for use with aftermarket or custom ECU tuning for best performance and drivability.
For performance enthusiasts looking to take their X3M or X4M to the next level, the Untd. Performance Catless Downpipe is the ultimate upgrade. Get the sound, power, and response your S58 was built for—track-proven and street-dominating.
⚠️ Note: This product is intended for off-road and track use only. It is not emissions-compliant in all regions. Please check local laws and regulations before installation.
