5 Inch B58 Downpipe For Supra & BMW 3.0L - M340i, M440i, M240i, 340i, 440i, 540i, 640i, 740i, X3, X4, X5

Unlock unparalleled performance with Palenon Performance’s 5-Inch bmw B58 Downpipe, the largest on the market For Gen1 & Gen2 BMW. Engineered for 2020+ Supra 3.0T & 2016-present BMW models including M340i, M440i, M240i, X5 40i, Z4, 440i, 540i, 640i, and 740i, this b58 downpipe features a smooth transition from 4.5” to 5” to 4” and ultimately to the OEM connection of 3.15”. Unlike other downpipes that quickly neck down to 3” at the flex joint, our design maintains larger diameters throughout, ensuring optimal flow right after the turbo.

Crafted from full stainless steel with a stainless steel flex joint and an inner stainless liner, this downpipe is TIG welded and back-purged for exceptional strength and longevity. Experience a deeper exhaust note, improved spool response, and increased power with easy installation compatibility for both factory and aftermarket exhaust systems.

Check Here If you have Gen3 Models

Features

• Maximum Flow: 5” diameter with smooth transitions enhances exhaust flow and reduces restriction.
• Faster Spool: Improved turbo response and quicker spool times.
• Increased Power: 30HP+ Noticeable horsepower and torque gains with proper tune.
• Warm and Deep Exhaust Note: Enjoy a richer, more warm sound.
• Easy Installation: Fits both right and left-hand drive vehicles without modifications.

Our racing-grade downpipes are expertly crafted from premium stainless steel, using precise and standardized bending techniques to ensure optimal performance and thrilling exhaust note. Our downpipe pricing is U.S. market guaranteed. With an unwavering commitment to both price and quality, we adhere to a "customer-first" standard, ensuring that our products exceed expectations without compromise.

Profile: Installing b58 catless downpipes will trigger a check engine light (CEL) due to the absence of OEM catalysts. To eliminate the CEL without a tune, we offer a CEL Delete Kit featuring O2 sensor spacers that comply with BMW’s emissions parameters, effectively removing the CEL.

Review & Installation Video

Why Choose Palenon Performance?

At Palenon Performance, we pride ourselves on crafting premium exhaust solutions. Our 5-Inch bmw B58 Downpipe is built with top-grade stainless steel and advanced manufacturing techniques for unmatched durability and performance. With a commitment to innovation and customer satisfaction, our skilled team continually pushes the limits to deliver high-quality, high-performance parts.

Upgrade your BMW’s exhaust system with Palenon Performance’s 5-Inch B58 Downpipe and experience the ultimate in power and sound. Order today to transform your driving experience!

Fitment

• 2019-2024 G20, G22 & G26 BMW M340i & M440i & xDrive
• 2016-2024 F22/F23 BMW M240i & M240i xDrive
• 2021-2024 G42 BMW M240i & xDrive
• 2019-2024 G14/G15/G16 840i & xDrive
• 2016-2019 F30/F31 BMW 340i & 340i xDrive
• 2016-2019 F32/F33/F36 BMW 440i & 440i xDrive
• 2016-2024 G30 BMW 540i & 540i xDrive
• 2016-2023 G32 GT BMW 640i & 640i xDrive
• 2016-2022 G11/G12 BMW 740i & 740i xDrive
• 2017 – 2022 G01 BMW X3 M40iX xDrive
• 2017 – 2020 G02 BMW X4 M40iX xDrive
• 2019-2024 G05 BMW X5 40i & xDrive
• 2019-2024 G29 BMW Z4 M40i
• 2020+ Supra A90/A91 3.0T

Handling

Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.

For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.

Expedited shipping applies only once the item is ready to ship.

Return

You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.

To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.

You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders

Non-returnable items:

• Burger Motorsports (BMS) products
• Used items
  
• Air Intakes
• Hazardous materials, flammable liquids, or gases
• Discounted items and gift cards other than palenon performance brand 

Exchanges

Return the item and place a new order once approved.

Refunds

Approved refunds are issued to the original payment method. A restocking fee (up to 20%) may apply for damaged packaging or delivery issues. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.

Cancellations

Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom or pre-order items canceled within their lead time are also subject to this fee.

Damaged or incorrect items

Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.

Disputes / Chargebacks

We take all chargebacks and payment disputes very seriously. Filing a false or baseless chargeback is considered fraud and may result in civil or criminal action. Such cases can lead to legal penalties, including fines of $1,000–$10,000 and possible imprisonment.

Our legal team will compile all relevant documentation to dispute any fraudulent chargeback and may forward the case to a collections agency or pursue legal proceedings in our jurisdiction.