The SLN 4" Titanium Single Mid Pipe represents the pinnacle of exhaust engineering designed to unlock the ultimate acoustic potential and power of the BMW S58 engine. By replacing the heavy, restrictive factory dual-pipe layout with a massive single 4-inch merge crafted entirely from ultra-lightweight titanium, this system drastically reduces unsprung vehicle weight while maximizing exhaust gas velocity.

Unlike traditional stainless steel, premium titanium delivers a distinctly crisp, exotic, and high-pitched inline-six roar that completely transforms the character of your M3 or M4. Engineered for flawless execution, this ultra-lightweight high-flow mid-pipe eliminates the notorious high-RPM rasp inherent to the S58 engine, delivering an uncompromising motorsport sound without sacrificing daily drivability.

Part Number: SLN_S58_MID_4_T

Key Features

– Massive 4.0-inch (101.6mm) ultra-lightweight titanium single center section
– Substantial weight savings compared to both OEM and aftermarket stainless steel systems
– Precision piecuts and TIG-welded titanium construction with stunning natural finish color transitions
– Non-resonated, free-flowing design maximizes turbo spool and exhaust gas scavenging
– Direct bolt-on fitment to OEM downpipes and rear axle-back system

Benefits

– Exotic, aggressive, and incredibly crisp straight-six exhaust pitch unique to titanium
– Exceptional weight reduction off the center of the chassis for improved performance dynamics
– Drastic reduction in backpressure for sharper throttle and turbo response
– Completely eliminates the muddy mid-range and high-RPM S58 rasp

Dimensions

– Main Pipe Diameter: 4.0" (101.6mm)
– Material: Ultra-lightweight performance titanium grade alloy
– Configuration: Super-lightweight single mid-pipe merge section

FAQ

Q: Will this mid-pipe trigger a Check Engine Light (CEL)?
A: Yes. Because this high-flow single mid-pipe deletes the restrictive factory secondary components, it will alter the variance readings on the factory sensors and trigger a CEL. A proper ECU tune, OPF delete module, or CEL deleter will be required to code it out.

Q: Is cutting required for installation?
A: Yes. Like almost all aftermarket mid-pipes for this platform, you must cut the factory one-piece exhaust system to slip and clamp this unit into place. Heavy-duty hardware is provided.

Q: Does titanium sound different than stainless steel?
A: Yes. Titanium is less dense and has thinner walls than stainless steel. This creates a much crisper, higher-pitched, and echoic motorsport tone that sounds distinctly more exotic than standard steel setups.

Fitment

– BMW G80 M3 (2021+)
– BMW G80 M3 Competition (2021+)
– BMW G81 M3 Touring Competition (2022+)
– BMW G82 M4 (2021+)
– BMW G82 M4 Competition (2021+)
– BMW G83 M4 Convertible (2021+)
– BMW F97 X3M LCI (2022+)
– BMW F98 X4M LCI (2022+)

If you are unsure on fitment, please message us with your registration or VIN and we will confirm compatibility before purchase.