RB25 RB25DET Intake Manifold Fuel Rail Throttle Body 90mmRB25 RB25DET Intake Manifold Fuel Rail Throttle Body 90mm Skyline TB Neo Engine Adapter Kit Included Features: It's a Brand New fabricated Aluminum RB25 Intake manifold. These intakes have been updated with IAC and are fabricated out of 3mm sheet aluminum and will not bend or flex under vacuum or boost. Material Thickness: 3 millimeters Throttle Body Opening: 90 millimeters Comes with billet 90mm Throttle body uses 14mm injectors eliminating stock