Bring out the boost, the crackle, and the response
When you want your B58 to feel quicker everywhere, the downpipe is one of the first mods that actually changes the way the car drives. The BMW, Toyota B58 Downpipes (B58) reduce backpressure so your turbo spools sooner, throttle feels sharper, and the exhaust note gets that raw, performance edge, perfect for weekend canyon runs, track days, and those “one more pull” moments on the way home.
Faster spool and stronger midrange you can feel
More flow means less restriction in the hottest part of the exhaust path. That translates into quicker boost response and better power delivery through the midrange, right where you live in a spirited street pull.
- Reduced backpressure for improved turbo efficiency
- Sharper throttle response so the car feels lighter on its feet
- More power potential with supporting mods and tuning
The sound your B58 build deserves
Whether you’re rolling into a meet or ripping a backroad, these downpipes add a deeper, more aggressive tone with more presence under throttle, without needing to change your entire exhaust system first.
- Sportier exhaust character that matches the car’s attitude
- More turbo sound and a more urgent note when you lean into it
Pick your setup: maximum flow or balanced street build
Choose the version that fits how you drive and where you live.
- Racing (Catless): built for maximum flow and performance
- 200-Cell Hi-Flow Catted: a strong balance of flow, power, and reduced emissions impact
Built to bolt on, built to handle heat
Made from premium stainless steel with precision TIG welds, these downpipes are designed to take repeated heat cycles and high boost without cracking or warping.
- Stainless steel construction for corrosion resistance and long-term durability
- Precision TIG-welded seams for strength under stress
- Direct bolt-on fitment with no cutting or permanent mods
What’s included
- 1 set of B58 downpipes
- Necessary installation hardware
Fitment
- 2025 B58 Gen3 Downpipe
- 2019-2024 BMW G20 M340i
- 2017-2018 BMW 340i
- 2016-2021 BMW M240i
- 2016-2019 BMW 440i
- 2021-Present BMW M440i
- 2018-Present BMW X3 M40i
- 2018-Present BMW X5 M40i
- 2022-Present BMW M240i
- 2020-Present Toyota A90 Supra
- 2024-Present BMW X7 M40i
Install note: Professional installation is recommended for proper alignment and secure mounting.
Ready for quicker spool and a meaner B58 tone?
Grab your configuration now and get your build dialed before the next meet, the next track day, or the next late-night cruise. Inventory moves fast once the season starts.
