*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
For those who demand an unrivaled exhaust experience from their BMW X3M and X4M, Valvetronic Designs has crafted a system that blends precision engineering, raw emotion, and absolute control. With a deep passion for the BMW M community, we set out to create an exhaust system that not only enhances performance but also amplifies the character of the S58 engine in a way that’s both visceral and exhilarating.
Our valved exhaust system is designed with no compromises—delivering the perfect balance of flexibility, sound quality, and everyday usability. Whether you're carving canyon roads, hitting the track, or cruising through the city, this system ensures that your X3M/X4M sounds as good as it drives.
Choose Your Sound: Two Distinctive Configurations
🔹 Single Mid-Pipe Configuration – The raw, unfiltered S58 experience. This design enhances the factory sound characteristics while unlocking a more aggressive and engaging tone. The deep, punchy exhaust note delivers a true M-car experience, making every drive an event. This has been one of our most sought-after systems, offering improved sound clarity, enhanced flexibility, and a more pronounced exhaust note—perfect for those who want to bring their X3M/X4M to life.
🔹 Equal-Length Resonated Full Exhaust – For those who seek something truly special, our newly developed equal-length resonated system refines the S58’s sound to exotic levels. By balancing the exhaust pulses, this configuration eliminates uneven frequencies, producing a smooth, high-pitched, motorsport-inspired tone reminiscent of European supercars. This setup transforms the driving experience, making your X3M/X4M stand out in any crowd—not just in performance, but in pure auditory bliss.
Uncompromised Engineering & Seamless Integration
Valved System for Total Control – Our electronically controlled valves integrate directly with the factory M1/M2 drive modes, allowing you to switch between a civilized, refined sound and an aggressive, open-throttle roar at the push of a button. For those seeking full manual control, we include an independent valve controller, letting you dictate the soundtrack of your drive.
Premium Material Choices – Available in high-grade stainless steel for durability and longevity, or ultra-lightweight titanium for an even sharper, more pronounced tone. Both materials ensure maximum heat resistance, strength, and performance.
True Cat-Back Performance – This system completely replaces the factory cat-back section, delivering measurable gains in power, response, and sound enhancement while maintaining daily drivability and long-term reliability.
Why Valvetronic Designs?
At Valvetronic Designs, we don’t just make exhaust systems—we create driving experiences. Every product we develop is driven by a passion for performance and a deep understanding of what enthusiasts truly crave. Our relentless commitment to innovation has led us to engineer one of the finest exhaust systems available for the X3M and X4M, ensuring that your BMW M experience is taken to the next level.
Whether you prefer the ferocious, high-energy sound of our Single Mid-Pipe System or the exotic, supercar-like tone of our Equal-Length Resonated System, you can’t go wrong. Both options deliver an unparalleled auditory experience, transforming your S58-powered machine into a symphony of mechanical brilliance.
It’s time to elevate your BMW X3M/X4M—because driving should be more than just getting from point A to B. It should be an event.
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Our History
For 23 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.
Dropped off my 2022 Subaru WRX for Exhaust, spoiler, aeroflow dynamic kit, and they killed it. Quality work and amazing customer service. Speedzone gets you right.
They gave me the best price I could find after shopping around for a while. They are well informed and familiar with the products they sell, great communication and quick responses. I would no doubt purchase from them again. Solid company. Recommended. A+
Came based on a work buddies recommendation. I was late by 30 minutes, confused my appointment time. But, 10/10 would come back. Came for a Downpipe and midpipe install. Not only was the gentleman accommodating, He ran into some issues, staff helped me out and pointed me into the right direction and got me going! They got my business and wouldn’t go anywhere else again!
They Take Great Care Of Their Customers and Their Rates Are Better Than The Competition! They Also Respond Quickly And Have A Great Assortment Of Parts!
Absolutely love the customer service that you get with Speedzone Performance! All my questions are always answered in such a timely manner and this a big PLUS because I live out of Florida and for them to be on top of answering all my questions in such a way means a lot. Thank you all for the amazing customer service.
My favorite place to go for anything car related, they have anything you could imagine & more. The people who work here are the coolest and most helpful people I’ve yet to meet at a car shop. They also don’t try to force sales on you and they genuinely help you with what you’re looking for, 100/10 shop!
The best of best, they are so nicely and kind people, yankee and billy more than the ones that runs the store they are a friend to everyone who walks in the store, very patient gets everyone what they need, everything you ask them they’ll answer your questions the best as possible, I love shopping there. They have the best prices, anything as car need you’ll find it there big shout-out to Yankee for being an amazing person and most important as a friend!! I love Speedzone!
