Reboot Engineering under drive power steering pulley

Underdrive your e9x power steering pulley to keep stock BMW power steering pump rpms with the larger diameter LS crank pulley. Useful for high rpm applications like drag racing, drifting and road racing where extended high rpm and stock overdriven setup may cause power steering pump failure. Approximately 4.75" stock diameter increased to 5.475". Will clear both lse9x accessory drive applications. 6 rib, billet aluminum (wont crack like factory plastic) anodized black.