Premium 55mm CNC Ported Black Manifold for M8 ModelsS&S Premium 55mm CNC Ported Black Manifold for M8 Models S&S Cycle has upped their intake game with a new M8 intake manifold and leveraged a 5 Axis CNC machining center for the ultimate in consistent shape and flow characteristics. Knowing polished porting has little impact on the intake side, they have machined a uniformly spaced and shaped texture that not only creates a larger surface area to encourage fuel dissipation, but also superior