Race Exhaust Manifold F90 M5 / F9X M8

Enhanced Cross-Section for Performance Gains

The LEVEL Engineering exhaust manifold is engineered with increased runner cross-sectional area at the manifold inlet to fully support cylinder head porting. Additionally, the turbine inlet cross-section has been increased by 26%, allowing seamless integration with upgraded turbochargers such as Jaeger or TTE units.

Through advanced runner optimization, internal pressure losses have been reduced by up to 74%, significantly improving exhaust gas velocity, turbine efficiency, and overall engine response.

Direct OEM Replacement

Designed specifically for the BMW S63TU4 engine family, the LEVEL Engineering exhaust manifold installs as a true OEM-style replacement:

• Direct bolt-on installation with no modifications required
• Retains factory turbocharger positioning
• Compatible with OEM heat shields—no trimming or alterations needed

This ensures straightforward installation while maintaining factory fitment and thermal management.

Optimized Internal Flow Design

The internal geometry of the manifold features a specialized dimpled surface, inspired by golf ball aerodynamics. These micro-dimples create a controlled turbulent boundary layer that separates the main exhaust gas flow from the manifold walls, significantly reducing internal flow resistance.

Additional internal optimizations include:

• Variable cross-section along the runner length for minimized pressure drop
• Smooth, uninterrupted flow paths
• No internal steps, casting imperfections, or protruding weld seams

The result is consistent, high-efficiency exhaust gas delivery to the turbine under all operating conditions.

Advanced 3D-Printed Stainless Steel Construction

The exhaust manifold is manufactured using advanced 3D printing technology from AISI 316 stainless steel, ensuring exceptional heat resistance, strength, and durability. Solid milled flanges and additional components—also 3D printed from stainless steel—are integrated for maximum precision and structural integrity.

This manufacturing approach enables complex internal geometries while significantly reducing overall weight compared to traditional cast or fabricated manifolds.

Weight: 12 lb / 5.45 kg