Boost pressure: 8-9 PSI

(2) 3″ OR (1) 2

MINI Hatch [F55/F56/F57]

or S52 valvetrain with a Ferrea Valve Kit for superior heat resistance

5150 Xtreme Duty Cylinder Sleeve Set, BMW S63 S65B46 Boost pressure: 8-9 PSI5150 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,