BMW M50 M52 S50 S52 Bully Engine Build by 5150 AutoSport

Every 5150 Bully Engine undergoes a comprehensive disassembly and meticulous inspection by our team of expert technicians. From there, our skilled craftsmen rebuild the engine with precision and care, utilizing top-of-the-line components.

No detail is spared; every gasket, seal, and component between the oil pan and valve cover is cleaned, replaced, or upgraded to ensure upmost performance and reliability. The result is a powerhouse engineered for the highest horsepower and boost applications, ready to drop into your track vehicle.

Price includes engine disassembly and inspection. Based on customer providing good engine core.

Featured Component Upgrades:

Fully Built 3.5L BMW M5X Engine

• Capable of producing up to 500 horsepower Naturally Aspirated or 1500+HP Turbo. 
• Engineered for engine speeds of up to 9,500 RPM
• Assembled from valve cover to oil pan – fully turn-key, ready to install
• Ported cylinder head for enhanced airflow and performance
• High-performance camshafts
• High Performance Valves and Valve Spring Kit
• Forged pistons for high-pressure strength
• Forged connecting rods for maximum RPM reliability
• Billet stroker crankshaft for increased displacement and structural integrity
• 5150 main and rod bearings with CT1 performance coating for exceptional wear resistance and oil film retention
• Upgraded ARP Hardware for reliability under pressure