GT1 Header

Racing Factory Yamamoto (RFY) has a singular claim for their GT1 Exhaust Manifold: to be the highest-performing commercially available manifold for the Honda NSX. This is not a hollow boast; it is the result of a fanatical dedication to engineering perfection.

The heart of the GT1's performance lies in its perfectly executed equal-length runner design for both front and rear engine banks. This specific geometry was not a simple calculation; it was achieved through an exhaustive development process of repeated prototyping, dyno runs, and on-track testing until the optimal shape was perfected. The result is a manifold that maximizes exhaust gas scavenging, significantly improving the engine's volumetric efficiency and unlocking substantial power.

Engineering & Performance:

• Proven Power Gains: Capable of delivering an approximate 30 PS increase over the factory manifolds.
• Meticulous Equal-Length Design: Ensures perfectly harmonized exhaust pulses from each cylinder, leading to superior gas flow and a dramatic improvement in engine breathing.
• Enhanced VTEC Crossover: The design specifically enhances the iconic VTEC transition, resulting in a more aggressive engine note and a formidable surge in top-end power.
• Exhaustive R&D: Born from a rigorous, iterative development cycle that embodies Japanese precision and commitment to performance.

This is the standard header we use in builds at A.S. Motorsport, because in our experience they're one of the best, featuring a much more thought out design than the TaiTec and all they're currently available replica's.