The 5150 AutoSport Pro-Series Turbo Build Kit: An all-inclusive arsenal of internals custom assembled to prepare your BMW M50/M52/S50/S52 engine for high horsepower, turbocharged performance.  A Kit for Every Build and Budget There is no one size fits all, which is why we offer several stages of upgrade. Through careful selection and pairing of components, we are able to offer customers a variety of kit options, catering to each build and budget. Options:  Level 1Horsepower Rating: 700 HP - ARP 2000 Head Stud Kit- Athena-SCE Cut-Ring Head Gasket- CP-Carrillo Forged Piston Set- Manley Performance Connecting Rod Set    - ARP Connecting Rod Bolts- 5150 High Performance Rod Bearing Set- 5150 High Performance Main Bearing Set- ARP Main Stud Kit Level 2Horsepower Rating: 1,000 HP - ARP 625+ Custom Age Head Stud Kit- Athena-SCE Cut Ring Head Gasket- CP-Carrillo x 5150 Pro-Xtreme Forged Piston Set- Manley Performance Connecting Rods    - ARP Connecting Rod Bolts- 5150 High Performance Rod Bearing Set- 5150 High Performance Main Bearing Set- ARP Main Stud Kit Pro-XtremeHorsepower Rating: 1,800 HP - ARP 625+ Custom Age Head Stud Kit- Athena-SCE Cut Ring Head Gasket- CP-Carrillo x 5150 Pro-Xtreme Forged Piston Set     - Heavy Duty Piston Pins    - Optional: Add Skirt Coating or Dome Coating- CP-Carrillo x 5150 Pro-Xtreme Forged Connecting Rod Set- 5150 High Performance Rod Bearing Set- 5150 High Performance Main Bearing Set- ARP Main Stud Kit