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BMW B58N GEN3 Downpipe
The RedStar B58N Gen 3 Performance Downpipe delivers a substantial increase in performance and sound. By eliminating the restrictive factory catalyst/OPF, this high-flow downpipe significantly improves exhaust flow, resulting in increased horsepower, sharper throttle response, and a more aggressive exhaust note.
Optimized OEM design for precise fitment and reliability, the RedStar B58N downpipe unlocks your vehicle’s full performance potential while maintaining seamless integration with factory components—making it an ideal upgrade for enthusiasts seeking a more exhilarating driving experience.
*VIN required in the notes section when placing your order.*
*For OPF-equipped vehicles, no tuning is required and no check engine light is expected when selecting either the HJS or GESI catalyst.*
Description
Compatibility:
- 2025+ BMW M340i/M340iX G20 LCI/G21 LCI
- 2025+ BMW M440i/M440iX G22/G23/G26 LCI
- 2025+ BMW M540iX / 550eX G60/G61
- 2025+ BMW 735i/740i/740ix/750eX/M760eX G70
- 2025+ BMW X3 M50 G45
- 2023+ BMW X5 LCI 40i/40iX/50eX G05
- 2023+ BMW X6 LCI 40iX G06
- 2023+ BMW X7 LCI 40iX G07
- 2023+ BMW XM 50e G09
Available Options:
- GESI GEN2 400cpsi- catalytic converters rated for 1000hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) >> Read more about G-Sport by GESI cats.
- HJS HD 200cpsi- Ultra High-Performance catalytic converters. Made in Germany. The most reputed converters for their outstanding characteristics, quality and durability. These extremely robust converters allow you to achieve flow numbers close to straight pipes while meeting strict Euro 6 emissions standards. >> Read more about HJS cats.
- 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.
- Straight Tunable 02 Spacers - Comes with 3 inserts to restrict flow to the 02 sensor and help set ready and prevent Engine Light conditions when using the Competition model without proper tuning.
- OPF - OPF Delete version with additional threaded bungs for thermocouple and pressure tubes. Slip on and Vband Downpipe options available. Downpipe will be made to VIN specs.
Main Features:
- flow-optimized smooth transition design
- Significant power gain
- Faster spool up and better throttle response
- Increasing the life of the turbo
- 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 flange
- All brackets and mounts as on OEM unit
- Limited lifetime warranty
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:
Tuning: For ECU tuning, we highly recommend Purisic Performance to ensure optimal performance and calibration. Contact: purisicperformance@outlook.com | (239) 777-7381
Read our Frequently Asked Questions.
Read our CEL Free Guide.
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
- 3.0L Turbo
The RedStar B58N Gen 3 Performance Downpipe delivers a substantial increase in performance and sound. By eliminating the restrictive factory catalyst/OPF, this high-flow downpipe significantly improves exhaust flow, resulting in increased horsepower, sharper throttle response, and a more aggressive exhaust note.
Optimized OEM design for precise fitment and reliability, the RedStar B58N downpipe unlocks your vehicle’s full performance potential while maintaining seamless integration with factory components—making it an ideal upgrade for enthusiasts seeking a more exhilarating driving experience.
*VIN required in the notes section when placing your order.*
*For OPF-equipped vehicles, no tuning is required and no check engine light is expected when selecting either the HJS or GESI catalyst.*