Valvetronic Designs Valved Sport Exhaust System for G29 BMW Z4 M40i

Valvetronic Designs Valved Sport Exhaust System for G29 BMW Z4 M40i

Valvetronic Designs dials in true dual-mode acoustics: with valves open, the system delivers a rich, aggressive timbre with crisp throttle response, pronounced turbo spool, and motorsport-inspired overrun; with valves closed, it settles into a refined, near-stock character perfect for long cruises or early-morning starts when discretion matters.

Sound & Control

• Valvetronic Designs tunes genuine dual-mode acoustics: with valves open, the system delivers a rich, aggressive timbre with crisp throttle response, pronounced turbo spool, and motorsport-inspired overrun; with valves closed, it settles into a refined, stock-like character ideal for long cruises or early-morning starts when discretion matters.

Performance Engineering

• Valvetronic Designs specifies a maximum-flow architecture: a single 3.5-inch midsection transitioning into dual 3.0-inch mandrel-bent runners to optimize scavenging and reduce backpressure. Tuned for a deep, full-bodied note inspired by the brand’s acclaimed B58 Supra and M340i systems, it is TIG-welded from T304 stainless steel for exceptional durability and corrosion resistance.

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
• 100% reversible, return to stock at any time

Applications

• BMW Z4 M40i: G29 (2017-Present) [3.0L I6 Turbo]

About Valvetronic Designs

Valvetronic Designs, based in Boyertown, Pennsylvania, is a leader in high-performance exhaust systems, dedicated to innovation, precision, and enhancing the driving experience. Specializing in bespoke solutions for luxury and performance vehicles such as Lamborghini, Ferrari, and Porsche, Valvetronic combines advanced engineering with meticulous craftsmanship to deliver unparalleled sound and performance. With proprietary technologies like free-flow configurations and double X-pipe designs, their exhaust systems set new benchmarks for exotic and race-inspired tones. Every product is designed and manufactured in-house, ensuring exceptional quality and tailored customization, from fitment precision to sound profiles. Driven by a passion for excellence, Valvetronic Designs strives to create the ultimate auditory and performance experiences for automotive enthusiasts worldwide.