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Maximize the power, performance, and sound of your BMW X5 M (F95) or BMW X6 M (F96) with the Untd. Performance Catted Downpipe. Designed for the S63 4.4T V8 engine, this downpipe features a 200-cell catalytic converter and an integrated heat shield. It provides a significant boost in exhaust flow, turbo spool efficiency, and horsepower, all while staying compliant with emissions regulations. Whether you’re tracking your BMW or pushing it on the street, this downpipe will enhance both your driving experience and vehicle performance.
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Maximize the power, performance, and sound of your BMW X5 M (F95) or BMW X6 M (F96) with the Untd. Performance Catted Downpipe. Designed for the S63 4.4T V8 engine, this downpipe features a 200-cell catalytic converter and an integrated heat shield. It provides a significant boost in exhaust flow, turbo spool efficiency, and horsepower, all while staying compliant with emissions regulations. Whether you’re tracking your BMW or pushing it on the street, this downpipe will enhance both your driving experience and vehicle performance.
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Transform your BMW X3M or X4M into a sharper, faster, and more aggressive machine with the Untd. Performance Catted Downpipe w/ Heat Shield. Built for the F97 and F98 platforms powered by the formidable 3.0L twin-turbo S58 engine, this downpipe delivers increased flow, improved turbo response, and a refined exhaust tone—while incorporating a high-flow catalytic converter and integrated thermal shielding for a street-friendly setup.
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- Compatibility: 3Series E90/E92 (2006-2012) 335D E90, 5Series F10 (2011-2016) 535d, X5 E70 (2007-2013) 35d
- The 335d DPF delete is machined from T-304 high-grade stainless steel and are tig welded in house
- Sharper throttle response due to faster spool of the turbo
- Noticeable power gains, not to mention the much more aggressive exhaust note which sounds truly amazing
- Lower temperatures and less exhaust backpressure due to the relief of the turbocharger. Also, the cylinder charge is increased
- There is also a substantial weight saving in comparison to the factory catalytic converter
- Mandrel-bent for better gas flow and maximum internal size to ensure ultimate performance without the loss of mid-range torque.
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- Improve Engine Output and Efficiency, Give you an extra HPs, and increases torque
- Large diameter and free flow tubing for unrestricted flow, Making the exhaust air flow smooth, Designed for high-performance racing
- Made of High-Quality 16-gauge T-304 Stainless Steel with Computerized Mandrel-Bends
- All joints are TIG welded to prevent cracking and wear
- CNC Machine Flange for MAX Strength and Durability
- Flanges chrome plated for corrosion resistance
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This downpipe increases exhaust gas flow from this reduced restriction and allows for more power in the low to mid range RPM. More responsive throttle response.
Downpipe includes 2 O2 sensor bungs complete with screw in plugs
Downpipe comes with factory style flanges for a leak free install
Each down pipe comes with standard factory OEM type mounting flange to support the downpipe and reduce stress on mounting points
A15Easily to install. Mounts in factory mounting locations. Comes complete with gaskets and bolts. No modifications are needed. -
- Full stainless steel 304 material pipes
- Laser CNC cut head and exhaust flanges
- CNC cut 5 into 1, precision slip fit collectors
- TIG Welded
- Bolt exhaust gaskets
- Head to manifold gaskets
- Exhaust Bolts & Nuts
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Unlock the full potential of Porsche’s legendary 4.0L flat-six with the Untd. Performance Exhaust Manifold—engineered for the 991.2 GT3 and GT3 RS. Precision-crafted for naturally aspirated perfection, this high-flow, equal-length manifold maximizes exhaust scavenging, throttle response, and top-end power while enhancing the iconic GT3 sound. Designed for enthusiasts who demand performance without compromise, this is the ultimate upgrade for those chasing lap times or pure driver engagement.
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- Manufactured from 304 stainless steel and TIG welded.
- Equal length CNC mandrel bend pipe for best performance.
- Includes gaskets & hardware
- Direct bolt on installation, comes complete with gaskets.
- Design utilizes a F1-style merge collectors and larger primary tubes for better drivability and creates more horsepower and torque.
- Design utilizes equal length primary tubes for maximum flow
- Headers really make the car noticeably faster across the rpm range with minimal additional noise.
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Untd. Performance Exhaust Headers, specifically designed to eliminate all the common fitment headaches associated with OEM headers. Crafted with precision and superior materials, our headers are the definition of quality and performance. Say goodbye to frustrating installation challenges, as our headers will seamlessly integrate with your E46. You can finally unleash the true potential of your vehicle with enhanced exhaust flow, improved power delivery, and a distinctively refined exhaust note.
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Untd. Performance Exhaust Headers, specifically designed to eliminate all the common fitment headaches associated with OEM headers. Crafted with precision and superior materials, our headers are the definition of quality and performance. Say goodbye to frustrating installation challenges, as our headers will seamlessly integrate with your E46. You can finally unleash the true potential of your vehicle with enhanced exhaust flow, improved power delivery, and a distinctively refined exhaust note.
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