PTG High Flow Exhaust Manifolds | M177.1 & M178

Original price was: $3,000.00.Current price is: $2,899.00.

By Enthusiasts, For Enthusiasts.

Unleash the structural headroom needed for serious power. Developed by the engineers at PTG, these High Flow Exhaust Manifolds are designed explicitly for drivers who demand more from their twin-turbo V8 platform. Delivering a dramatic increase in exhaust flow capacity over restrictive OEM units, this upgrade unlocks higher boost thresholds, faster turbo spool, and optimized engine efficiency under heavy load.

Key Features:

  • Massive Flow Gains: Delivers an immediate 59% flow increase with the replacement M177.1 manifold, scaling up to an exceptional 74.5% flow increase when paired with the PTG-X Manifold System.
  • 4-to-1 Collector Design: Features a precision-engineered 4-to-1 runner and collector layout to maximize exhaust gas velocity and improve turbo response.
  • Premium Inconel Construction: Utilizing ultra-durable cast construction to withstand extreme track heat and high-boost pressure cycles without cracking or warping.
  • Direct Bolt-On Fitment: Form-engineered to ensure a true 100% bolt-on application that integrates flawlessly without sacrificing OEM fitment.
  • All-Inclusive Installation Kit: Package includes all necessary high-temperature gaskets and heavy-duty hardware for a clean, direct installation.
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Unlocking High-Boost Potential: Advanced Exhaust Geometry

When building a high-horsepower street setup or chasing down faster track times, the factory Mercedes exhaust manifolds quickly become a primary choke point. The tight OEM casting restricts exhaust gas evacuation, building up unwanted backpressure and trapping extreme heat near the cylinder heads. The PTG High Flow Exhaust Manifold Upgrade completely reshapes the exhaust path.

By implementing an optimized 4-to-1 collector architecture, these manifolds smooth out exhaust pulses and accelerate flow directly into the hot side of the turbochargers. This specialized engineering allows your engine to breathe effortlessly, drastically reducing lag, supporting larger upgraded turbo setups, and allowing your engine management software to safely command higher boost targets.

In-House Validation & High-Grade Metallurgy

Extracting reliable performance from the modern hot-V8 biturbo configuration requires materials that refuse to compromise under stress. Designed and validated entirely in-house by PTG engineers, these manifolds feature a heavy-duty cast construction crafted from specialized premium alloy.

This high-density composition offers superior thermal stability compared to standard tubular steel manifolds, ensuring the runners maintain their structural integrity under glowing track temperatures and extreme cylinder pressures. Whether you are performing a straight hardware replacement or completing a top-tier engine build, this set delivers the ultimate motorsport-grade performance advantage.

Technical Specifications & Features:

  • Manifold Flow Metrics: +59% flow increase (Standard Replacement) / +74.5% flow increase (with full PTG-X System).
  • Collector Architecture: High-velocity 4-to-1 layout.
  • Development Origin: In-house designed, engineered, and validated by PTG.
  • Installation Blueprint: 100% direct bolt-on installation.
  • Hardware Package: Complete with high-grade gaskets and replacement installation hardware.
  • SKU / Part Number: 009-0906-4501

Vehicle Fitment Guide:

  • 2015–2020 Mercedes-AMG GT / GT S / GT C / GT R (C190 Platform – M178 Engine)
  • 2018–2020 Mercedes-AMG C63 / C63 S (W205 Facelift – M177.1 Engine)
  • 2018–2020 Mercedes-AMG E63 / E63 S (W213 – M177.1 Engine)
  • 2018–2021 Mercedes-AMG GLC 63 / GLC 63 S (X253 – M177.1 Engine)

Tags

PTG exhaust manifold M177.1, Mercedes M178 high flow headers, AMG GT turbo manifold upgrade, C63 AMG cast exhaust runners, biturbo V8 performance manifolds, Premier Tuning Group.

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