MAD US B58 Catted 4.5'' Downpipe F, G Chassis & Supra (Up to 2024)
SKU: 80163846009

MAD US B58 Catted 4.5'' Downpipe F, G Chassis & Supra (Up to 2024)

Sale price$238.77 Regular price$265.30
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

MAD US B58 Catted 4.5'' Downpipe F, G Chassis & Supra (Up to 2024)Upgrade from the stock B58 downpipe to the MAD B58 catted downpipe for maximum airflow, power, and sound! Introducing the Mad Catted B58 Downpipe, the perfect upgrade for BMW enthusiasts looking to enhance their vehicle's performance and exhaust sound. Crafted from premium quality 304 stainless steel, this downpipe is built to withstand extreme temperatures and harsh driving conditions. The smooth transition of our piping design ensures maximum

Upgrade from the stock B58 downpipe to the MAD B58 catted downpipe for maximum airflow, power, and sound!

Introducing the Mad Catted B58 Downpipe, the perfect upgrade for BMW enthusiasts looking to enhance their vehicle's performance and exhaust sound.

Crafted from premium quality 304 stainless steel, this downpipe is built to withstand extreme temperatures and harsh driving conditions. The smooth transition of our piping design ensures maximum exhaust flow, which results in increased horsepower, torque, and throttle response.

The Mad Catted B58 Downpipe is also equipped with high-flow catalytic converters, which help to reduce harmful emissions while maintaining optimal performance levels. The catalytic converters are engineered to deliver maximum flow and minimal back pressure, which results in a noticeable improvement in engine sound and overall driving experience.

The downpipe is designed to bolt-on directly to the stock exhaust system and does not require any cutting or welding, making installation quick and hassle-free. The Mad Catted B58 Downpipe is also compatible with aftermarket exhaust systems, providing you with endless customization options to suit your preferences.

Don't settle for stock performance - upgrade to the Mad b58 200 Cell Race Catted Downpipes and experience the true potential of your BMW.

Race use only        

Features:

  • Compatible with right-hand drive and left-hand drive vehicles
  • Smooth bends for maximum airflow without any drone
  • Up to 30HP increase on the stock turbos, even more on upgraded turbos
  • Lifetime warranty on defects and fitment
  • Spot on fitment
  • Flex section
  • 200 CEL high flow cats
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 80163846009

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    4.8 ★★★★★
    Based on 1727 reviews
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    Verified Purchase
    Dick Incorp
    Draper, US
    ★★★★★ 5
    It's a good one, buy it.
    Size: 16 AWG-100 ft
    Actual 5 stars! OFC, copper stranded wire, takes solder nicely when tinned, stiff and pliable enough to stay bent. covering melts INTO wire as expected. I was hoping for a good deal and got one.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 15, 2025
    E
    Verified Purchase
    Eric D
    Carnegie, US
    ★★★★★ 5
    good product
    Size: 16 AWG-100 ft
    good product
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 21, 2025
    Z
    Verified Purchase
    Zander kagley
    Cuba, US
    ★★★★★ 5
    Good product at a great price
    Size: 16 AWG-100 ft
    Used to wire my door speakers and it worked amazing
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 21, 2026
    J
    Verified Purchase
    jyst1
    Pawtucket, US
    ★★★★★ 5
    Smaller than the original, but works well.
    When I received it, it was so small that I thought it was a toy, or maybe for some 4cyl engine. It is significantly smaller than the original one. When I looked closer, the mount holes did line up, so I tried it. I did have to get shorter mount bolts. To my surprise, it works great! I don't know what the longevity will be, but it made it through a busy august! Considering the price and how small it is, I might just buy a second one to keep on board. Just in case.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 14, 2025
    B
    Verified Purchase
    Bob Valentine
    Houston, US
    ★★★★★ 1
    Warning!!!
    I was so impressed after install!! Fired right up faster that it ever has in the past, had the boat out about 8 times and CACK!!! They say they will stand behind the product and replace it, but do I risk another day ruined on the river? Btw, I have a Volvo penta 5.0 21.5' Larson I/O
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 28, 2025

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