Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
TheValvetronic Designs Valved Exhaust Systemfor the BMW G29 Z4 M40i is the ultimate upgrade for enthusiasts who demand both performance and versatility. Developed from our extensive R&D on B58-powered platforms—including the Supra and M340i—this system transforms the Z4’s sound and performance, unlocking the true potential of BMW’s celebrated inline-six.
Sound & Control
Valves Open:A rich, aggressive tone with crisp throttle response, pronounced turbo spool, and motorsport-inspired overrun.
Valves Closed:A refined, stock-like sound perfect for long cruises or early-morning starts—ideal when you want performance without the attention.
Performance Engineering
Maximum Flow Design:Single3.5" midsectiontransitioning intodual 3" mandrel-bent runsfor optimal exhaust scavenging and reduced backpressure.
Balanced Sound Profile:Tuned for a deep, full-bodied note inspired by our acclaimed B58 Supra and M340i systems.
Precision Construction:TIG-weldedT304 stainless steelfor exceptional durability and corrosion resistance.
Fitment
2017+ BMW G29 Z4 M40i
Features
Fully mandrel-bent for maximum flow
Precision TIG welds for high strength
Built from T304 stainless steel
Electronic-actuated valves for rapid and reliable operation
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
