Have you been considering building your E46 M3 but weren't sure where to start? Unsure of what components to pair for the best possible power and reliability combination? We receive inquiries daily from S54 owners interested in building their engine but unsure where to start. The 5150 AutoSport Complete Engine Build Kit features every component you need to fortify your BMW S54 Engine internally and prepare for high power, high boost applications, or high compression, all-motor applications. These components are the combination that we have had the most success with and recommend as a result. Please note that each engine kit requires a consultation before shipping, and one of our engine build advisors will contact you regarding your piston configuration, compression ratio, etc. before shipment. This kit includes: SuperTech 9600 Valvetrain Kit Single groove Intake Valves Single groove Inconel Exhaust Valves Valve Spring Seats Dual springs Titanium retainers Lash caps Valve lock/keepers CAT Cams Camshafts OR 5150 Turbo Camshafts CAT Cams DLC Follower Set CAT Cams Rocker Arm Shaft and Oil Connector Bridge Kit ARP Custom Age 625+ Head Stud Kit Athena-SCE Cut Ring Head Gasket CP-Carrillo x 5150 AutoSport Pro-Xtreme Pistons HD Wrist Pins CP-Carrillo x 5150 AutoSport Pro-Xtreme Connecting Rods Calico Coated 5150 AutoSport High Performance Rod Bearings Calico Coated 5150 AutoSport High Performance Main Bearings ARP Main Stud Kit BMW S54 Applications: BMW 3 Series 2000-2006 E46 M3 BMW Z3 Series 2001-2002 Z3 M BMW Z4 Series 2006-2008 Z4 M