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SKU
Product
Rating
Price
  • Untd. Performance Catted Downpipe - BMW N55 F22 F30 M235i M235x335i 335 xi435xi 435i 2013+
    SKU: UNTD-373

    Elevate your BMW N55’s performance with the Untd. Performance Catted Downpipe. Purpose-built for enthusiasts who want more power, faster spool, and a throatier exhaust tone—without the full commitment of a catless setup—this high-flow catted downpipe delivers serious gains while maintaining a more emissions-conscious design. Perfect for daily-driven builds, weekend warriors, and tuned street machines.

  • Untd. Performance Catted Downpipe W/ Shield - BMW M2 M3 M4 G80 G82 2020+ S58
    SKU: UNTD-401

    Elevate your BMW’s performance and sound without sacrificing refinement or emissions-conscious design with the Untd. Performance Catted Downpipe with Heat Shield, tailored for the S58-powered G80 M3, G82 M4, and G87 M2. Featuring a high-flow 200 cell catalytic converter and integrated heat shielding, this downpipe strikes the perfect balance between power, tone, and drivability—ideal for high-performance builds where quality and control matter.

  • Untd. Performance Catted Downpipe W/ Shield - BMW S55 F80 F82 M2 M3 M4 2014-2019
    SKU: UNTD-405

    Unlock the full potential of your BMW M3 F80 or BMW M4 F82 with the Untd. Performance Catted Downpipe with Shield. Designed specifically for the S55 3.0L Twin-Turbo Inline-6 engine, this downpipe offers significant performance improvements while maintaining legal emissions compliance. Whether you’re a street enthusiast or a track-day warrior, this downpipe is the perfect upgrade to improve your vehicle’s power, turbo response, and overall driving experience, all while keeping emissions in check.

  • Untd. Performance Catted Downpipe W/ Shield - BMW S63 M5 F10 M6 F13 2011-2018
    SKU: UNTD-413

    Elevate the performance of your BMW M5 F10 or BMW M6 F13 with the Untd. Performance Catted Downpipe with Shield. Engineered for the BMW F10 M5 M6 S63 4.4L Twin-Turbo V8, this downpipe combines high-flow performance with emissions compliance. Featuring a 200-cell catalytic converter and a built-in heat shield, this downpipe provides substantial gains in turbo performance while maintaining a balance of sound and regulatory compliance. Whether you’re looking for better throttle response, increased power, or an aggressive exhaust note, this downpipe has you covered.

  • Untd. Performance Catted W/Shield Downpipe - BMW B48 G20 330i G30 G31 520i 530i
    SKU: UNTD-396

    Take your B48-powered BMW to the next level with the Untd. Performance Catted Downpipe w/ Heat Shield, engineered to maximize performance while keeping exhaust temperatures in check. Designed for the BMW 330i (G20) and 520i/530i (G30/G31) with the 2.0L B48 turbo engine, this downpipe delivers increased power, faster turbo spool, and a refined, sporty exhaust tone—all while incorporating a high-flow 200-cell catalytic converter for streetable performance.

  • Untd. Performance Catted W/Shield Downpipe - BMW M850I G14 G15 G16 /X5M X5 G05/G30 M550I N63R
    SKU: UNTD-384

    Unlock a whole new level of performance for your BMW with the Untd. Performance Catted Downpipe. Designed specifically for the N63R engine found in the BMW M850i G14/G15/G16, X5M X5 G05, and M550i G30, this catted downpipe is engineered to enhance exhaust flow, improve turbo response, and increase horsepower while maintaining emissions compliance. With a built-in heat shield, this downpipe is a must-have upgrade for enthusiasts seeking maximum performance while still keeping things street-friendly.

  • Untd. Performance Catted W/Shield Downpipe - BMW N63 F06 F07 F10 F01 G11 F15 550i 650i 750i X5 X6
    SKU: UNTD-383

    Unleash the full potential of your BMW with the Untd. Performance Catted Downpipe featuring a heat shield. Specifically designed for the BMW N63 V8 engines in the 550i, 650i, 750i, X5, X6 (F06, F07, F10, F01, G11, F15), this downpipe delivers a balanced combination of improved performance and sound without sacrificing emissions control. With a 200-cell catalytic converter and a durable heat shield, this downpipe provides enhanced flow, quicker turbo spool, and a richer exhaust note, while maintaining compliance with emission standards.

  • Untd. Performance Catted W/Shield Downpipe - BMW S63 4.4T X5 X6 M F95/F96 2020+
    SKU: UNTD-378

    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.

  • Untd. Performance Catted W/Shield Downpipe - BMW S63 X5M F85 X6M F86 4.4T 2015-2019
    SKU: UNTD-381

    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.

  • Untd. Performance Catted W/Shield Downpipe - BMW X3M X4M F97 F98 3.0T S58
    SKU: UNTD-375

    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.

  • Untd. Performance Downpipe - BMW 3er 335d xDrive F30 - 76mm
    SKU: UNTD-438
    • 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.
  • Untd. Performance Downpipe - BMW E9X 33D 535D 635D E60 E61 M57 N2 Twin Turbo
    SKU: UNTD-441
    • 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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