Ferrea's exclusive two-step slow forging process optimizes grain flow

please check your tolerances and size before installation

Spark duration

Avionics-quality hard chrome plating for heat resistance

and Matte Carbon Fiber

5150 Xtreme Duty Cylinder Sleeve Set, BMW S58 X5M Ferrea's exclusive two-step slow forging5150 Xtreme Duty Cylinder Sleeves, also known as cylinder liners, are centrifugally cast, ductile iron cylinder sleeves. Designed to work with piston sizes ranging from 82 mm to 84 mm. 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