5150 Xtreme Duty Cylinder Sleeve Set, BMW S54 11340039494 and they have proven to

and they have proven to be a top performer in both street and racing BMW B48 engines

SuperTech valves are renowned among engine builders for their exceptional quality and engineering

resist shearing forces

drag strip

Install the main caps

5150 Xtreme Duty Cylinder Sleeve Set, BMW S54 11340039494 and they have proven to5150 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,