Constructed from billet aluminum and treated for exposure to the elements

Installation is clean and simple and requires only basic hand tools

That allows precious coolant to flow into the radiator and start shedding heat sooner

It can be used in conjunction with a Link ECU as an I/O expander

For advanced setups using an aftermarket throttle body

BMW S68 Cylinder Sleeves 5464 Constructed from billet aluminum and5150 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,