5150 bearings have demonstrated exceptional longevity and reliability

the factory BMW bearings are made from tin-aluminum which are 5-times harder than a softer lead-copper bearing design

80mm Exhaust   Turbo Conversion

5 mm bore size for 3342 cc displacement

but rather a part of the Quality Control process at BE

BMW M60B30 / M60B40 Forged Piston Set ARP Head Studs 5150 bearings have demonstrated exceptionalCP Carrillo represents the highest quality pistons on the market, engineered for maximum power and durability. Utilizing high strength, lightweight materials and advanced engineering, this BMW M60B30 M60B40 piston set features: Lightweight Design: CP Carrillo pistons are made from high strength, lightweight materials, such as forged aluminum alloy. Reduced piston weight contributes to improved engine responsiveness and acceleration. Advanced