track days

2006 - 13     E90 / E91 / E92 / E93     330i

0) 2003-2015

If you're aiming for horsepower up to 600HP

Sold in single quarts

5150 Xtreme Duty Cylinder Sleeve Set, BMW B48 03005-TD7S-S track days5150 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,