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    M5 F90 Secondary Cat Delete
    • M5 F90 Secondary Cat Delete
    • M5 F90 Secondary Cat Delete
    • M5 F90 Secondary Cat Delete

    BMW F90 M5 Secondary Downpipes

    RS.F90M5.Secondary

    Redstar Exhaust F90 M5 Secondary Cat Delete. We designed flow-optimized and perfectly fit BMW F90 downpipes, Lower Secondary Slip Style Downpipe only. Completely bolt-on, No check engine light issues.

    Performance Heat Shield:
    $1,099.00
    Quantity

    Description

    Compatible Vehicles:

    • 2017-2023 BMW M5 F90 4.4 L S63 twin-turbocharged V8
    • 2018-2023 BMW M5 Competition F90 4.4 L S63 twin-turbocharged V8

    Available Options:

    • OE-style Heat Shielding with ceramic inner liner - signature REDSTAR thermal management feature that reduces radiant heat from the exhaust pipes up to 70-80%. Being inspired by racecar engineers who uses it alot, we moved heat shielding to the tuning industry and made it available as an option for any REDSTAR products. Usual thermal wraps or ceramic coatings are not even close in effectiveness and durability to our Heat Shielding. Please be aware of fake shielding when it is nothing but foil wrapped around the pipe. Without a sufficient ceramic wool layer inside and properly embossed foil it will not work as expected.

    Main Features:

    • Significant power gain
    • Faster spool up and better throttle response
    • Increasing the life of the turbos 
    • Reducing under hood temperature
    • Adds a very nice tone to the exhaust
    • 100% bolt-on installation
    • 100% TIG welded and back purged
    • Highest quality 2.0mm wall 304 stainless steel
    • OEM-spec V-band flanges
    • All brackets and mounts as on OEM unit
    • Limited lifetime warranty
    • will not create a check engine light (CEL)

    Shipping:

    We offer WORLDWIDE shipping. Once you create your account your order will update with the appropriate shipping cost. Please, ask us for details and availability.

     Notes:

    OFF ROAD/MOTORSPORT USE ONLY! 
    This product is not designed to meet any emissions standards and is not for street or highway use. This product is not certified and may not be legal for use on emissions controlled vehicles in any country/jurisdiction.

    Product Details

    Data sheet

    Engine Type
    4.4L Twin Turbo