The factory bolts are simply not sufficient for those planning to run above factory power levels

BMW X5 Series

- Greater Horsepower

)-To test the sender

these B46 Ferrea valves deliver exceptional performance and reliability

Solid Lifter Conversion Shims for BMW M50 M52 S50 S52 S50B32 The factory bolts are simplySolid Lifter Conversion Kit for BMW M50 M52 S52 Engines This solid lifter conversion kit offers a proven, easy solution for high performance BMW builds. Tested for several years in M50 engines making over 1000 whp and spinning to 9000 RPM, this system replaces the hydraulic function with hardened steel shims installed inside factory style hydraulic lifters for improved reliability and precision at high RPM. You have two lifter options depending on