CEES BMW M550/M550i G30 N63 4.4TT Valved Axle Back Exhaust & Mid Pipes (2017–2024)

CEES BMW M550/M550i G30 N63 4.4TT — SS304 Valved Axle Back Exhaust & Mid Pipes

Engineered for the performance-driven BMW M550i owner who demands more — more sound, more power, more presence. CEES delivers a precision-crafted axle back and mid pipe system that transforms your G30 into something truly extraordinary.

🔧 Specifications

Performance & Handling Gains

• Power Increase: By reducing backpressure and optimizing exhaust scavenging, users can expect an increase of 12–20 HP and improved torque throughout the RPM range.
• Faster Turbo Spool: The high-flow mid-pipes allow the twin turbos to breathe more freely, significantly reducing throttle lag and sharpening engine response.
• Weight Savings: Our SS304 system is significantly lighter than the heavy, bulky factory exhaust, improving the vehicle's power-to-weight ratio and rear-end agility.

Material: 

• T304 Stainless steel: 26.0 lbs lighter than stock

⚡ Why CEES?

• We are a factory-direct manufacturer, offering a bridge between high-end performance and OEM/ODM customization.
• Precision TIG Welding: Expertly welded to endure sustained high exhaust temperatures and increased boost levels.
• Optimized exhaust flow — reduced backpressure for real gains in horsepower and torque
• Aggressive, refined sound — deep growl at full throttle, near-silent drone at cruise
• 100% Reversible — bolt-on installation, always able to return to stock
• Can be paired with CEES Downpipe — bolted mounting, no cutting required
• All hardware included — clamps, gaskets, and mounting hardware in the box
  

📦 What's Included

• CEES Axle Back / Midpipe Exhaust System (your selected material)
• Electronic valve controller(midpipe No controller included）
• All necessary installation hardware and clamps

🚚 Shipping & Lead Time

• Shipping method: DHL, FedEx, and UPS air freight for fast delivery.
• In-Stock Items: 6–12 days.
• Built-to-Order: 2–3 week production lead time. 
• Ships via express courier; bulk orders available by sea freight

🛠️ Custom Options Available

We offer full customization including:

• Custom tip styles — carbon fiber, stainless steel, titanium
• Valve configurations (with/without valves, large diameter, bevel molding)
• Custom logo, packaging, and branding
• Any design you can imagine — contact us to discuss

❓ FAQ

Will this fit my car?
This system is designed specifically for the BMW M550 / M550i G30 N63 4.4TT (2017–2024). Modeled directly from real car chassis for 100% fitment. If you're unsure about fitment, contact us before ordering.

Can I go back to stock?
Yes — 100% reversible. The system uses bolt-on mounting with no permanent modifications required.

What's the difference between Axle Back and Mid Pipes?
The Axle Back replaces the rear section of your exhaust including the muffler and tips. The Mid Pipes replace the center section between the downpipe and axle back — ideal if you already have an aftermarket axle back.

Do you offer a downpipe?
Yes, our system is compatible with CEES downpipes for a full exhaust upgrade.

Need something custom?
We specialize in fully custom exhaust solutions. Reach out with your requirements and we'll make it happen.