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5150 AutoSport

BMW N55 Complete Engine Build Kit by 5150 AutoSport

BMW N55 Complete Engine Build Kit by 5150 AutoSport

Regular price $8,499.99 USD
Regular price Sale price $8,499.99 USD
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Shipping calculated at checkout.
Connecting Rods

Have you been considering building your N55-powered BMW 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 N55 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 N55 internally and prepare your engine for high power, high boost 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: 

  • High Performance Valve Spring Kit
  • High Performance Intake Valves
  • High Performance Exhaust Valves
  • High Performance Valve Locks
  • ARP 625+ Custom Age Head Stud Kit
  • Cometic MLX Head Gasket
  • CP-Carrillo Forged Piston Set
    • HD Pins 
  • CP-Carrillo x 5150 AutoSport Pro-Xtreme or SP Components Connecting Rods
  • Calico Coated 5150 AutoSport High Performance Rod Bearings
  • Calico Coated 5150 AutoSport High Performance Main Bearings


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