Valvetronic Designs

Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System

SKU: BMW.Z4.G29.VSES.BR.BRSH
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Valvetronic Designs - BMW G29 Z4 M40i Valved Sport Exhaust System
Sale
$4,003.99
$3,603.99
Availability:
Tips
  • Description
  • Fitment
  • Refund Policy

BMW Z4 M40i Valved Exhaust System

3.5" Midpipe, Dual 3" Axle-Back, Vacuum Valves


Overview

The Valvetronic Designs Valved Exhaust System for 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: Single 3.5" midsection transitioning into dual 3" mandrel-bent runs for 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-welded T304 stainless steel for 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

  • 11.1 lbs lighter than the factory exhaust

  • Beautiful tips to complement the Z4’s styling


Returns

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Additional non-returnable items:
Gift cards
Downloadable software products

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted (if applicable)

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.

If you would like to start a return please click here

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.


Sale items (if applicable)

Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Labor Fees (if applicable)

AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.

Exchanges (if applicable)

To start an exchange, click here

Non-refundable items

The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.

Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.

All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.


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