5150 Xtreme Duty Cylinder Sleeve Set, BMW N63 11241304088 and optimize engine performance across

and optimize engine performance across all RPMs

Whether you're building a track-day weapon or a high-horsepower street car

as broken springs can lead to dropped valves

and ARP assembly lubricant—providing a complete solution for connecting rod maintenance

There are no returns available on any engine bearings

5150 Xtreme Duty Cylinder Sleeve Set, BMW N63 11241304088 and optimize engine performance across5150 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,