Valve Keepers - 20R/22R/RE Hardened Keeper Set (8 Pair) 0 Valve Keepers (Hardened) For high lift cams, it is recommended to use hardened valve keepers. LC Engineering carries hardened valve keepers for all 20R/22R/22RE valves using stock Toyota retainers... $39.58 Quick view add to cart Add Wish List add to cart