Description
Unleash the true potential of your BMW with our B58 Downpipe Upgrade Kit, designed for 2016–2022 M240i, 340i, 440i, 540i, 740i, 840i, and xDrive variants. Whether you’re building a street beast or prepping for the track, this downpipe is engineered to deliver major performance gains.
Crafted from high-grade stainless steel with a race-proven flex section and precision TIG welds, this downpipe replaces the restrictive factory unit, allowing for increased turbo spool, improved exhaust flow, and more aggressive turbo sounds. Expect reduced turbo lag, stronger mid-range torque, and up to 30 HP gains when paired with a proper tune.
This B58 downpipe also features a heat-resistant woven jacket for added protection against engine bay temperatures, helping preserve nearby components and maintain consistent performance. Installation is straightforward with factory-style brackets and CNC-machined flanges, ensuring a leak-free, bolt-on fit.
Compatible with OEM and aftermarket exhaust systems, it’s ideal for enthusiasts looking to elevate their driving experience. Whether you daily drive your 340i or track your M240i, this upgrade delivers performance and durability you can rely on.
Need help installing this upgrade? Check out this installation guide for step-by-step instructions.
Pair this with our B58 Charge Pipe Upgrade for maximum performance
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