Buddy Club P1 Racing Valves are made from forged stainless steel, and are coated with a PVD black nitridce friction reducing coating to reduce friction and increase premature wear resistance. These valves are ideal for using high lift aftermarket camshafts and/or forced induction applications. Each valve features a flat face to help achieve maximum compression, and a partially narrowed stem to maintain factory valve weights despite the additional weight required to manufacture flat faced valves. These valves are very technologically advanced and are some of the very best components you can use for your race engines that you rely on.