5150 Xtreme Duty Cylinder Sleeve Set, BMW S65 gatT131RB 74% peak efficiency

74% peak efficiency

are securely held in place

and they have proven to be a top performer in both street and racing BMW S63 engines

OEM rubber bushings wear from constant movement

5150 Xtreme Duty Cylinder Sleeve Set, BMW S65 gatT131RB 74% peak efficiency5150 Xtreme Duty Cylinder Sleeves, also known as cylinder liners, are centrifugally cast, ductile iron cylinder sleeves. Benefits of Engine Sleeving Include: Increased Bore Size: Sleeving your engine gives the opportunity to increase bore size for higher displacement and increased engine capacity, resulting in more power and more torque Increased Strength: Iron sleeves are stronger than alusil when subjected to high power, high stress applications,