The Revshift flex disc is CNC machined from 6061 billet aluminum. It utilizes high quality polyurethane bushings to maximize rigidity and strength while maintaining the proper amount of flex to protect your drivetrain.
This is a high performance alternative to the oem flex disc. The oem rubber flex disc is known for failing under high loads and needing to be replaced on a regular basis. There is no longer a need to worry after you install a Revshift flex disc on your BMW.
Are they implying that the polyurethane bushings will last indefinetely? Longer than the stock rubber disks? Do you have issues with tearing through the rubber ones?
Dave