Constructed from billet aluminum and treated for exposure to the elements

BMW 645Ci V8 (4

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

leading to noticeable issues such as loss of torque at certain RPM ranges and decreased fuel economy

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

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,