• Photo - Primary
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package
  • Photo - out of package

Dinan 18-25 BMW X3 M40i/X4 M40i (G01/G02) Valved Catback Exhaust System - Black Tips

$2,049.95
$2,049.95 $2,306.95
Shipping calculated at checkout.
  • Fully secure checkout
  • Trusted by thousands
  • Rated and reviewed

Question about this product?

We're happy to help.

Up to 11% off

While looks are important, the auditory advantages are what any enthusiast is truly after with an exhaust system, and the Dinan offering for the G01/G02 M40i platform delivers in spades. For not only aural enhancement via the elimination of the central collector/resonator, but also weight savings and simplicity. The stock single-to-dual pipe setup has been abandoned in favor of an enlarged, straight, unrestricted, and freer flowing single pipe system. This pathway feeds into a Helmholtz equipped muffler that limits frequencies associated with drone, as well as assists in altering the overall tone of the setup to deliver the signature low Dinan rumble. The no-nonsense design allows versatility in volume levels with the retained factory valve functionality. Go from refined when cruising (low RPM’s) to rowdy when in it (high RPM’s), with ease. Or better yet, pair the system with an exhaust valve remote and have full control of elevating or reducing the sound! When open, the system behaves as a straight pipe solution that promotes maximum flow and volume for an exhilarating and forceful chorus. When the valve is closed however, exhaust gases are wholly redirected through the muffler and emit more tempered vocals acceptable for even the most sensitive ears. It is the perfect blend of civility when cruising or the full spectrum of auditory delight when in the throttle. No matter the situation, the Dinan valved cat-back exhaust system is the answer for the discerning enthusiast looking for sound without sacrifice.

Installation Instructions
  • Factory-like fitment with included mounting hardware and valve componentry for both pre-LCI and LCI compatibility
  • Quad 3.75-inch (95mm) double-walled, black ceramic coated, clamp-on tips with laser engraved Dinan logo
  • Factory valve functionality retained; refined or rowdy from the same exhaust
  • 7-pounds lighter than the stock system (60-pounds vs. Dinan: 53-pounds)
  • Enjoyably louder, sportier sound w/ a delightful octave drop
  • Drone abatement technologies used to reduce cabin resonance
  • Larger diameter piping for increased flow (83mm vs. 80mm)
  • Factory resonator/collector removed for increased volume
  • Direct bolt-on w/ no cutting or welding required
  • Maximum gains of +6 HP and +5 lb-ft of torque
  • 100% 304 Stainless Steel construction

This Part Fits:

Year Make Model Submodel
2018-2024 BMW X3 M40i
2019-2025 BMW X4 M40i
Dinan 18-25 BMW X3 M40i/X4 M40i (G01/G02) Valved Catback Exhaust System - Black Tips

$2,049.95

  • Fast shipping

    Ordered a product and it arrived the next day. Super impressed with the speed and the careful packaging.

    Jordan Smith
    Seattle, Washington

  • Excellent service

    Customer support was helpful; they resolved my issue in minutes. Really appreciated the follow-up email to ensure satisfaction.

    Taylor Christos
    Austin, Texas

  • Great selection

    Wide variety of products across the range. Found everything I needed in one place, very convenient.

    Alex Williams
    London, England

  • Top quality

    The product I bought exceeded my expectations. Top-notch quality, thoughtful design, and it came beautifully packaged.

    Sam Davis
    San Francisco, California

  • Reliable store

    Have ordered multiple times, always received exactly what was described. Products are genuine and fully functional.

    Casey Brown
    Denver, Colorado

  • User-friendly website

    Easy to navigate and make purchases. A hassle-free shopping experience with clear descriptions and transparent pricing.

    Riley Wilson
    Boston, Massachusetts

  • Smooth checkout

    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

    Morgan Lee
    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.