Frequently Asked Questions – M4 Tuning

All the answers to the most common questions from our customers

In this section, you’ll find answers regarding homologation, installation, shipping, warranty, and payment methods. If you still have questions or can’t find what you’re looking for, don’t hesitate to contact us.


Are the sport exhausts you sell street legal?

The majority of our products are street-legal (homologated) and are delivered with:

  • Homologation code stamped directly on the exhaust.
  • Homologation certificate to be kept with your vehicle documents (no registration update required).

This way, you can drive legally on roads throughout Italy and Europe.

Non-homologated products are clearly labeled as such in the product description.

If the installation requires cutting the original exhaust, the product description will not include the phrase “No modifications required.”


Do your motorcycle exhausts come with a dB killer?

Yes, all our exhausts include removable dB killers, unless otherwise specified in the product description.


Are your products covered by a warranty?

Absolutely! All our products come with a warranty. The duration depends on the manufacturer but is always at least 2 years.


Does installing a sport exhaust improve performance?

Yes. It has been proven that installing a sport exhaust leads to a noticeable increase in power and torque across the entire powerband.

Performance gains depend on the type of exhaust system installed (slip-on, full system, etc.), but even with a slip-on muffler you will notice:

  • Better overall performance
  • Reduced total vehicle weight

Does a sport exhaust improve the sound?

Absolutely. The sound will be deeper, fuller, and more aggressive, with a noticeable difference immediately after installation.


Which payment methods do you accept?

We accept the following payment methods:

  • Bank transfer
  • Credit cards (Visa, Mastercard, etc.)
    Installment payments

How are products shipped?

Orders are shipped using reliable express couriers such as:

  • BRT
    GLS
  • FedEx
  • DPD
  • EuroExpress

How can I get assistance?

You can contact us via email or phone. Please note that our phone lines may be busy due to high call volumes. For faster response times, we recommend reaching out via email or our contact form.

If you have more questions or would like additional information about our products or services, please visit our CONTACT page. We’ll be happy to help you.