THE-Tuner S4/RS4 B5 Cast High Flow Exhaust Manifold
Delivery ETA information.
Custom shipping prices available upon request.
20% UK VAT is removed at checkout for all EU & Rest of World countries once destination country is selected.
THE-Cast High Flow exhaust manifolds for Audi RS4 2,7 T / S4 / A6 4B
Product information:THE exhaust manifolds are cast from heat-resistant stainless steel 1.4848.
In order to meet the need for high-quality exhaust manifolds, we have designed the product for ease of installation, durability and optimization of the flow.
During the development, the basis for the construction with CAD and CFD was created by means of 3D scanning and 3D measurement.
With the help of bionic design, starting with our bend , a large number of optimization loops were carried out up to the final designs.
Advantages over the OEM part:• More throughput through flow-optimized design
• All 3 cylinders have the same throughput with a tolerance of 1%
• For comparison: OEMs are manufactured with a tolerance of up to 5%.
• Although the left and right bends have not the same length, our design achieves
almost the same throughput.
Key data:• More throughput through flow-optimized bionic design
• All 3 cylinders are within a tolerance of 1%
• Although the left and right manifold have a different design,
they are within a tolerance of 1%
• For comparison: OEMs are designed with a tolerance of up to 5%
• Material stainless steel 1.4848 (up to 1100 ° C)
• Investment casting for uniform wall thickness and surface quality
• More space for fresh air pipes
• Turbocharger is in the OEM position
• Connections for OEM exhaust gas temperature probes are available on both manifolds
• Improved response and design for higher performance
Extra information:We recommend using the original Audi bolts and nuts for assembly.
You can find suitable fresh air pipes here:
Available sizesWithout 95mm MAF , With 95mm MAF
Available sizesRS4 / S4 , RS6
Available sizesRS4 Throttle Body fitment , RS6 Throttle Body fitment
Available sizesAdd spacer plates +£30 , Without spacer platesStock Order
Available sizesRS4/RED , RS4/BLACK , S4/RED , S4/BLACK