Up to 2000 HP handling capability

and #11240150249

Ferrea valve springs stand out as one of the best industry offerings

with our robust iron sleeves

5150 Xtreme Duty Cylinder Sleeve Set, BMW S54 4244 Up to 2000 HP handling5150 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,