- Precision laser-etched 360° timing marks for precise adjustments

this Harmonic Damper is engineered to withstand the demands of high-revving M50 / M52 / S50 / S52 engines

Constructed from billet aluminum and treated for exposure to the elements

presents the solution to keep their engines cool

BMW S68 Cylinder Sleeves 5464 - Precision laser-etched 360° timing5150 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,