EN
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023
B58 Exhaust 4.5in DownPipe w/ Heatshied - BMW M340i B58 G20 G29 Supra A90 B58 2018-2023

REVEXAAUTO · B2B PRODUCT INQUIRY

B58 Exhaust 4.5in DownPipe w/ Heatshied – BMW M340i B58 G20 G29 Supra A90 B58 2018-2023

$599.99

Unlock the full potential of your B58 engine with our High-Performance Exhaust Downpipe with Integrated Heat Shield, engineered to deliver massive gains in power, sound, and turbo efficiency. Designed as a direct bolt-on upgrade for B58-equipped vehicles, this downpipe significantly reduces backpressure, allowing your turbocharger…

Fitment reviewVehicle context checked
Wholesale supportQuantity-based inquiry
Export follow-upDestination considered

Request product information

Tell us about your company and requirements. This product page is included automatically with your inquiry.








    Need a single unit? View direct purchase options

    1000 in stock

    SKU: -351031858
    Categories: ,

    Product information

    Review product details, fitment notes, material information and available specifications before sending your inquiry.

    Description

    Unlock the full potential of your B58 engine with our High-Performance Exhaust Downpipe with Integrated Heat Shield, engineered to deliver massive gains in power, sound, and turbo efficiency. Designed as a direct bolt-on upgrade for B58-equipped vehicles, this downpipe significantly reduces backpressure, allowing your turbocharger to spool faster and breathe freely.

    Precision-built for enthusiasts who demand performance without compromise, this downpipe features a high-flow design and a custom-fitted heat shield to protect surrounding components from radiant heat.

    Key Features:

    • High-Flow Design
      Increases exhaust gas flow by reducing restrictions, resulting in improved turbo spool, throttle response, and horsepower gains.

    • 304 Stainless Steel Construction
      Built from premium T304 stainless steel for long-term durability and corrosion resistance under high temperatures and harsh conditions.

    • Integrated Heat Shield
      Professionally fabricated heat shield protects engine bay components and reduces heat soak, ideal for daily drivers and track builds alike.

    • CNC Machined Flanges
      Ensures a perfect, leak-free fit with factory or aftermarket turbochargers and midpipes.

    • Mandrel-Bent Tubing
      Smooth, precision bends eliminate flow disruptions and turbulence for optimal performance.

    • Factory Fitment & Easy Installation
      Direct bolt-on replacement with no cutting or welding required. Retains use of OEM mounting points and O2 sensor locations.

    • Optional 200 Cell High-Flow Catalytic Converter or Catless Configuration
      Choose between catted (emissions-friendly) or catless (track use) options based on your performance goals.

    • TIG-Welded for Strength & Aesthetics
      Clean, strong welds ensure durability while giving a race-ready appearance.

    Performance Gains:

    • +15–25 HP (stock tune)

    • +40+ HP (with tune)

    • Noticeable reduction in turbo lag

    • Enhanced exhaust sound and turbo spool

    Vehicle Compatibility:

    • 2018–2023 BMW M340i (G20) – B58 3.0L Turbo I6

    • 2019–2023 BMW Z4 M40i (G29) – B58 3.0L Turbo I6

    • 2020–2023 Toyota GR Supra 3.0 (A90/A91) – B58 3.0L Turbo I6

    Additional information

    Make

    Model

    Material

    Color

    Reviews

    There are no reviews yet.

    Be the first to review “B58 Exhaust 4.5in DownPipe w/ Heatshied – BMW M340i B58 G20 G29 Supra A90 B58 2018-2023”

    Your email address will not be published. Required fields are marked *

    WHY REVEXAAUTO FOR B2B

    Built for clearer sourcing conversations.

    Product, fitment, quantity and destination are brought together before quotation.

    Vehicle-first review

    Share make, model, year and supporting details so the application can be reviewed.

    Carbon-focused catalog

    Exterior and interior parts across performance and luxury vehicle applications.

    Wholesale conversations

    Quantity, specification and repeat-order needs can be included in one inquiry.

    Export context

    Destination and order requirements are considered during follow-up.

    PRODUCT SOURCING FAQ

    Frequently asked questions

    Useful starting points for fitment, wholesale quantities, customization and delivery planning.

    How do I confirm this part fits my vehicle?

    Send the make, model, year, trim and any relevant photos or VIN details in the inquiry. RevexaAuto will use that context when reviewing the application before quotation.

    What is the minimum order quantity?

    MOQ can vary by product, specification and production method. Enter your target quantity in the form, including whether you need a sample, small batch or repeat wholesale order.

    Can material, weave, finish or color be customized?

    Available options depend on the product and quantity. Include your preferred carbon construction, weave, finish or color so feasibility can be checked during follow-up.

    How are production and delivery times confirmed?

    Lead time depends on stock status, specification, quantity and destination. The applicable production and shipping plan is confirmed as part of the quotation process.

    What information should I include for a faster response?

    Include your company name, vehicle application, part required, material or color preference, estimated quantity, destination country and any target timeline.

    Related products