EMPI 4045 High-Rev HD Single Spring Kit, VW Bug, High Performance, 1600cc EMPI VW bug buggy sand rail high-rev single valve spring kit with retainers & valve locks Great for High Reving Engines Kits include Single Hi-Performance Valve Springs, Chromoly Retainers and Hardened Valve Locks. Includes: -8 Chromoly Retainers -8 Valve Springs -8 Pairs of Keepers