Valvetronic Designs Valved Sport Exhaust System for F8x BMW M3 / M4 [BMW.F8X.M3.M4.VSES.BR.RC/BMW.F8X.M3.M4.VSES.TI.TIBRT]

Valvetronic Designs Valved Sport Exhaust System for F8x BMW M3 / M4 [BMW.F8X.M3.M4.VSES.BR.RC/BMW.F8X.M3.M4.VSES.TI.TIBRT]

Valvetronic Designs addresses the S55’s well-known rasp and thin tonal character with its Equal-Length Valved Cat-Back for the BMW F8x M3 and M4, replacing factory harshness with a rich, balanced exhaust note the platform can truly deliver. The system pairs a 2.75-inch equal-length mid-section with an H-pipe to a 3.5-inch axle-back, using the equal-length architecture to smooth exhaust pulses across the rev range while preserving the aggressive edge enthusiasts expect. With the valves open, gases exit from the passenger-side tips for maximum volume and response; with the valves closed, flow is routed through a quad-chamber muffler to the driver-side tips for a quieter, more refined character ideal for daily use. Installation is fully bolt-on, mounting to factory points with no cutting or welding required.

Why It Works

• Valvetronic Designs’ engineering delivers results: the equal-length mid-section balances exhaust pulses for a cleaner, smoother tone without sacrificing aggression, while the integrated H-pipe improves scavenging to produce a fuller, more refined sound. With dual-mode valve control, it runs raw and loud with the valves open, or subdued and civilized when closed.

Sound & Control

• With the valves open, Valvetronic Designs’ system delivers an aggressive, free-breathing tone with reduced rasp and enhanced high-rpm clarity; with the valves closed, it returns to stock-like sound levels for discreet driving. Electronic valve control is included via a standalone controller, with OEM integration available.

Features

• Constructed from T304 Stainless Steel or Grade-5 Titanium
• Electronic valves operated via controller, OEM integration supported
• Fully mandrel bend for maximum flow
• High strength precision welds
• Direct bolt-on, no cutting or welding required

Specifications

• Material: T304 stainless steel or Grade-5 titanium
• Mid-Section Diameter: 2.75″ equal-length with H-pipe
• Axle-Back Diameter: 3.5″
• Valves: Electronic, rapid open / close
• Design: Quad-chamber muffler for refined closed-valve tone
• Weight Savings (vs OEM):
  • Stainless: –21.7lb
  • Titanium: –49. lb

What’s Included

• 2.75″ equal-length H-pipe mid-section
• 3.5″ axle-back with quad-chamber muffler
• Electronic valve system with controller
• All necessary clamps and hardware

Applications

• BMW M3: F80 (2014–2018) [3.0L I6 TT S55]
• BMW M4: F82, F83 (2014–2020) [3.0L I6 TT S55]

Notes

• While running free-flow or race downpipes, some “2k rpm rasp” may occur during low-rpm shifts. For the smoothest and most refined exhaust tone, high-flow 200-cell silencers are recommended.
• Raw Titanium tips not pictured

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.