Valvetronic Designs HFD Valved Sport Exhaust – BMW M3 / M4 (G8X) S58

OVERVIEW

The Valvetronic Designs HFD (High-Frequency Development) Valved Sport Exhaust for the S58 M3 and M4 uses a resonated mid-pipe that tunes pulse timing for a smoother, more exotic inline-six tone and removes rasp while keeping high-frequency character — the resonated alternative to the equal-length design. Choose your tip finish; a mid-pipe-only option is also available.

SPECS

• Valved cat-back exhaust — the valves integrate with the factory drive modes (or manual control)
• T304 stainless steel construction (Grade 5 Titanium available on most applications)
• Mandrel-bent, TIG-welded; 100% reversible to stock
• HFD resonated mid-pipe — smoother, exotic tone with rasp removed
• Electronically valved axle-back
• Full-system and HFD mid-pipe-only configurations
• T304 stainless

PARTS INCLUDED

• Valved exhaust system with selected tips
• Valve extension harness / controller

TECH RESOURCES

• No additional hardware required for the full system (bolt-on)
• Exhaust demo / sound (YouTube)
• Professional installation recommended

PART NUMBER

• HFD mid-pipe only — BMW.G8X.M3.HFD.MP.BR
• Full system — BMW.G8X.M3.VSES.HFD.BR.[finish]

VEHICLE APPLICATIONS