Valvetronic Designs 2022-2025 BMW G42 M240i Valved Sport Exhaust System
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Available
Sound & Video
Sound & Control
Valves Open
With valves open, the M240i's B58 inline-six finally speaks with the authority its performance deserves — a rich, turbocharged howl that carries the distinctive silky texture of BMW's legendary straight-six lineage. The sound builds progressively from a confident idle note through a muscular mid-range before reaching a smooth, high-RPM crescendo that rewards every foot of throttle travel. Overrun produces a satisfying crackle-and-pop sequence that makes spirited backroad driving genuinely addictive.
Valves Closed
Closed-valve operation returns the M240i to its role as an effortless daily companion. Exhaust output drops to factory-quiet levels, preserving the unassuming character that makes the 2 Series such a practical everyday car. Morning commutes, parking structure navigation, and highway cruising are completely unaffected — the system is acoustically invisible when discretion is called for. Passengers and neighbors alike remain entirely unaware of the transformation waiting behind a single drive-mode press.
Construction & Engineering
- Material: T304 stainless steel or Grade 5 titanium (Ti 6Al-4V) — TIG-welded with argon back-purge
- Engine Tuning: Acoustic profile optimized for B58 3.0L turbocharged inline-six characteristics
- Valve System: OEM-integrated electronic valves with factory iDrive mode compatibility
- Tips: (4) double-wall polished stainless or forged carbon fiber options
- Tubing: Mandrel-bent for compact G42 underbody routing
Specifications
Fitment
| Year | Make | Model | Variant |
|---|---|---|---|
| 2022–2026 | BMW | G42 M240i | All variants incl. xDrive |
Installation
What’s Included
- Full valved cat-back exhaust system
- Electronic valve actuators with OEM wiring harness
- Quad exhaust tips (style per selected configuration)
- All gaskets, clamps, and mounting hardware
- Installation instructions
VALVETRONIC DESIGNS
BMW G42 M240i Valved Sport Exhaust System
B58 Inline-Six Unleashed | T304 Stainless or Grade 5 Titanium | OEM Valve Integration
The G42 M240i is the entry point to BMW's performance hierarchy that punches so far above its price point it has become one of the most celebrated driver's cars in the current lineup. The B58 3.0-liter turbocharged inline-six, producing 382 horsepower, is widely regarded as one of the best engines in production today — smooth, responsive, and capable of prodigious power with minimal modification. Wrapped in a compact, rear-biased chassis with precise steering and a stiff structure, the M240i delivers a driving experience that rivals cars costing significantly more. The one area where BMW held back is the exhaust — tuned for maximum refinement in a car positioned as an accessible daily driver, the factory system suppresses virtually all of the B58's naturally engaging exhaust note.
The Valvetronic Designs valved sport exhaust transforms the M240i from a quiet, competent coupe into a genuinely thrilling machine that communicates its mechanical brilliance through sound as well as speed. Specifically tuned for the B58's exhaust characteristics — its boost curve, firing interval, and natural frequency profile — the system amplifies what makes this engine special rather than imposing a generic aftermarket tone. The silky, high-revving character of the inline-six is preserved and elevated, not replaced with hollow resonance or artificial aggression.
Available in T304 stainless steel or Grade 5 titanium, the system integrates seamlessly with the factory electronic valve system for on-demand control through the existing iDrive interface. No additional remotes, no phone apps — just pure, immediate control through the drive mode selector you already use every day.
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