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BMW F90 M5 Secondary Downpipes
The RedStar Exhaust BMW F90 M5 Secondary Downpipes are engineered to improve exhaust flow and performance while maintaining factory drivability. Designed as a lower secondary slip-style downpipe, this upgrade replaces the restrictive factory secondary catalytic converters with a fully bolt-on solution.
Developed with a flow-optimized design and precision fitment, these secondary downpipes install seamlessly with no check engine light or error code issues. The result is enhanced exhaust sound, improved response, and a more engaging driving experienceโwithout the complexity of primary downpipe replacement.
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
The RedStar Exhaust BMW F90 M5 Secondary Downpipes are engineered to improve exhaust flow and performance while maintaining factory drivability. Designed as a lower secondary slip-style downpipe, this upgrade replaces the restrictive factory secondary catalytic converters with a fully bolt-on solution.
Developed with a flow-optimized design and precision fitment, these secondary downpipes install seamlessly with no check engine light or error code issues. The result is enhanced exhaust sound, improved response, and a more engaging driving experienceโwithout the complexity of primary downpipe replacement.