K20 Ultra Street Cast Intake Manifold - K-series - Honda - Acura | K20A K20A2 K20A3

The Ultra Street Series Intake Manifold is a high-performance upgrade designed for K-Series engines. This intake manifold is the result of extensive research and development, offering a modular design that makes it easy to disassemble, customize, and adjust for different performance needs.

Inspired by the Pro Series Intake Manifold, this version uses advanced technology, including Computational Fluid Dynamics (CFD), to create a two-piece design. This allows for easy modifications, like changing the plenum volume using optional spacers. The manifold has been tested both on the dyno and in real-world driving to ensure it delivers more power and torque than many competitors.

Made from lightweight, high-strength aluminum alloy, this intake manifold is precision CNC-machined and thoroughly inspected for quality. It features a 71mm throttle body opening and thick walls to prevent issues during port matching. The 1.82L plenum is designed to distribute airflow evenly to all four cylinders, ensuring optimal performance. The long intake runners with smooth transitions enhance airflow, making this intake manifold a top choice for modified street and mild turbo applications.

Features include:

• High-grade mounting hardware
• 1.82L plenum volume
• 8.72" long runners with raised velocity stacks (portable)
• 71mm throttle body opening
• Thermal intake gasket included
• Port-ready cast runner walls
• Fits K-series PRB (RSX) style head
• Not compatible with K24Ax (RBB/RAA) or K20Z3 (RBC) style heads due to missing water port
• Fits without modification due to its compact size and design, offering better clearance than some other manifolds

This intake manifold has been test-fitted in a K-swapped EG Civic and offers a significant performance upgrade for those looking to enhance their vehicle's intake system.