IN STOCK AND READY TO SHIP.
Mugen Exhaust Manifold/Header 4-2-1 for S2000 F20C/AP1 18100-XGSB-K0S0. Weights 6.2 kg vs. stock of 10.2 kg, a net weight savings of 4 kg or 8.8 lbs. Kit and comes with all hardware you need to install, also include is the upper header heat shield and Mugen equipped badge.
More Detailed Pictures (Note shown is F22C Header):