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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.
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.
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.
BMW G01 X3 M40i
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
Questions?
Small items arrive to you in under 1 week
Larger products like full suspension kits must ship freight and can take 1-3 Weeks
Instructions are included for most parts that require any sort of knowledge to install.
Here's what to do if your parts come WITHOUT instructions:
1. Some parts are genuinely common sense on how they get installed
2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video
3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer
4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed
ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.
Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way
If the part was NOT installed, we accept returns within 14 days of delivery.
If the part WAS installed (or attempted installation), we cannot accept a return.
All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.
YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.
NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.
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Phone: (475) 227-5381
Email: sales@legendsautoparts.com
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