SKU: 80905035351

BMW X3 / X4 M40i Valved Sport Exhaust System

Sale price$1349.99 Regular price$1499.99
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

BMW X3 / X4 M40i Valved Sport Exhaust SystemBMW G01 X3 M40i Valvetronic Designs Valved Exhaust System Unleash the Full Potential of Your B58 Overview At Valvetronic Designs, we believe enthusiasts deserve the ultimate driving and sound experience. Thats why our pursuit of perfection for the G01 platform has resulted in one of our finest exhaust systems to date. Engineered using lessons from our most successful designs, this system utilizes the maximum possible piping diameter to unlock a raw,

BMW G01 X3 M40i Valvetronic Designs Valved Exhaust System

Unleash the Full Potential of Your B58


Overview

At Valvetronic Designs, we believe enthusiasts deserve the ultimate driving and sound experience. That’s why our pursuit of perfection for the G01 platform has resulted in one of our finest exhaust systems to date.

Engineered using lessons from our most successful designs, this system utilizes the maximum possible piping diameter to unlock a raw, unfiltered sound when the valves are open. The result? Explosive turbo spool, aggressive overrun, and an addictive tone that sings from idle to redline.


Sound & Control

This system is designed for complete versatility:

  • Valves Open: Full-throttle excitement with unrestrained volume and character.

  • Valves Closed: Refined and quiet, ideal for daily driving or early morning starts.

With over 25 dB of difference between modes, you have complete control over your M40i’s soundtrack thanks to the included standalone valve controller.


Performance Benefits

Beyond the sound, this exhaust delivers improved exhaust flow, contributing to sharper throttle response and enhanced driving dynamics. The precision-engineered 3.5-inch midpipe ensures maximum flow for the B58 engine to breathe freely.


Fitment

  • BMW G01 X3 M40i


Features

  • Constructed from T304 Stainless Steel

  • 3.5-inch midpipe for optimal flow and sound

  • Dual actuated valves for unmatched longevity and flexibility

  • Includes standalone valve controller

  • 25.5 lbs lighter than the factory exhaust

  • Fully mandrel bent for maximum flow efficiency

  • Precision TIG welds for high strength and durability

  • 100% reversible—return to stock at any time

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: 80905035351

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Phill.The.Thrill
Lake Worth, US
★★★★★ 5
Traditional Grown Man Shirt
Size: Large, Color: Light Grey Vertical Stripe
Great cotton, classically-style button down shirt for guys not wanting anything slim fit, this shirt size is legitimate. It’s a nice heavyweight cotton shirt. I don’t think I’d say it was wrinkle resistant but it doesn’t take much effort to press this garment.
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Reviewed in the United States on January 20, 2026
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xofjohn
Port Orchard, US
★★★★★ 5
Softer and Larger than Expected
I was a bit wary of this shirt because I had only purchased 100% cotton ones in the past. My first impression out of the package was how soft the material felt. I was very impressed because it usually takes many washings before oxford cloth shirts get that soft. When I put it on, I discovered that there was no noticeable difference made with the small amount of stretch fabric woven into the shirt. I suspect that there would be some give if I wore the shirt as a tight fit, but I prefer my shirts loose, so it wasn't an issue. I found that the shirt was larger than other same sized shirts I've received from Amazon in the past--bigger is better than smaller, but if you are looking for a close fit, you will want to be conservative in the size you order. I didn't realize until I'd been wearing it for a while that it lacks a pocket, I went to put my glasses in my shirt pocket and there wasn't one!
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Reviewed in the United States on November 30, 2023
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Susan Avila
Chelsea, US
★★★★★ 5
Beautiful Shirt
Color: Rose, Size: XX-Large
I love the quality, looks,and style I buy them for my husband. They wash well the only thing I don't know is how they dry in a dryer because, I hang his to dry but one thing for sure is that I don't need to iron them because they're not wrinkled and for me that's a win. I highly recommend them. One thing not all styles are true to size. I've bought 8 other styles the COOFANDY BRAND in XL they fit and hang beautiful but in this particular style, I had to get him XXL. My husband is 5'10 and 200lbs
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Reviewed in the United States on April 25, 2026
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Jan Lewis
Houston, US
★★★★★ 5
Very nice fit
Color: Dark Blue, Size: 3X-Large
This shirt was very nice. I got it for my husband to wear at a wedding.
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Reviewed in the United States on May 2, 2026
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Susan Wise
Omaha, US
★★★★★ 4
Nice shirt for the price
Color: Purple, Size: Large
It was a nice shirt that I bought for my husband. The fabric quality is OK but he liked the comfort.
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Reviewed in the United States on August 2, 2025

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