The Kraftwerks K-Race kit includes a Rotrex C30 or C38 Supercharger, Rotrex Self-Contained Oiling System, KraftWerks Rotrex Oil Cooler, KraftWerks Air Temperature Sensor Bung, KraftWerks Recirculating Bypass Valve, KraftWerks Supercharger Pulley (100mm, 105mm, or 110mm), KraftWerks High-Quality CNC-Machined Brackets, High-Quality Metric Fasteners and Hardware, and a detalied Installation Manual.