for inserts use PFR5-4612 & 4613 (inserts fit into the voiding of the original bush)

Featuring an exclusive 58mm inducer GEN2 CEA® (Competition Engineered Aerodynamics) compressor wheel machined from a 2618-aluminum forging and a 62mm CEA® turbine wheel

90mm Exhaust   Hot Street  314° Intake / 314° Exhaust   12

OEM & CDI compatibility

Manufactured from premium 4340 steel forgings

BMW N55 Complete Engine Build Kit by 5150 AutoSport Connecting Rods:CP-Carrillo for inserts use PFR5-4612 &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