BMW M3/M4 F80/F82/F83 S55 3.0T 76mm Straight Single Catback Exhaust System

Raw Track Power & Sound — CEES BMW M3/M4 F80/F82 3.0T 76mm Straight-Through Single Catback Exhaust System

Engineered for dedicated track enthusiasts and performance purists, the CEES 76mm Straight-Through Single Catback Exhaust System for the BMW M3 (F80) and BMW M4 (F82/F83) powered by the 3.0L S55 Twin-Turbo engine features an uncompromising full straight-through architecture . By replacing heavy, restrictive factory mufflers and multi-chamber resonators with an aerodynamic, high-flow 76mm (3.0") single-pipe tract, this system drastically slashes backpressure, optimizes turbo spool, cuts significant curb weight, and unleashes a ferocious, unfiltered motorsport roar.

🚀 Engineering Highlights

• Full Straight-Through Flow  : Zero internal baffles, chambers, or restrictive valves. Direct exhaust evacuation yields maximum high-RPM horsepower and torque potential for tuned and high-boost S55 platforms.
• High-Flow 76mm (3.0") Single-Pipe Architecture: Merges twin turbo runner tracts into an aerodynamically optimized 76mm mandrel-bent single pipe, optimizing exhaust gas velocity, improving scavenging, and drastically reducing high-load backpressure.
• Dramatic Weight Savings: Eliminates bulky factory rear mufflers and valve motors. The Grade 5 Titanium variant cuts total exhaust mass by over 45% compared to OEM.
• Aggressive Motorsport Acoustic Tone: Delivers an unapologetic, deep, and loud race sound profile with crisp throttle crackles, spool whistle, and visceral overrun pops.
• Master-Tier Handcraftsmanship: Precision TIG-welded from premium T304 Stainless Steel or aerospace Grade 5 Titanium to withstand extreme exhaust gas temperatures during track-day abuse.

📊 Technical Specifications

✨ Bespoke Your Build — Chat with Our Specialists on WhatsApp

• WhatsApp: +86 15626172519
• Email: cees-exhaust@qq.com

📦 Shipping & Lead Times

• 🛠️ Production Time: Built to order in 2–4 weeks
• 🚚 Shipping: Premium express via DHL / FedEx / UPS — estimated 7–15 business days to your door
• 📦 Free shipping

FAQ

1. Why choose a 76mm (3.0") single straight-through design?

The 76mm single-pipe layout provides substantial cross-sectional volume while significantly reducing turbulence compared to restrictive multi-pipe mufflers. For the S55 twin-turbo, a 76mm straight pipe yields the lowest backpressure and quickest boost threshold possible for track applications.

2. What does the "Full Straight-Through" design mean?

A full straight-through catback provides a completely unrestricted, open exhaust path from downstream of the catalytic converters all the way to the exhaust tips. There are no baffles, packing chambers, or valves to impede gas flow, guaranteeing maximum exhaust flow velocity and pure race sound volume.

3. How loud is this straight-through catback system?

This is one of our loudest and most visceral configurations for the F8X chassis. It provides a crisp, aggressive motorsport tone under acceleration and distinct overrun burbles. It is tuned specifically for track days and drivers seeking maximum auditory presence.

4. Will this exhaust trigger a Check Engine Light (CEL)?

No. This catback system installs downstream of the factory downpipes and primary catalytic converters where the O2 sensors reside. Because oxygen sensor readings remain unaffected, it will not trigger a CEL.

5. Are you a direct manufacturer?

Yes — CEES Exhaust is a direct manufacturer based in Guangdong, China. We build our exhaust systems in-house with strict quality control, providing enthusiasts with race-proven engineering at factory-direct pricing.