TOMEI OVER SIZE VALVE SET For SKYLINE GT-R BNR32 BCNR33 BNR34 RB26 163400Brand TOMEI Product Number 163400 Compatible Car SKYLINE GT R BNR32 BCNR33 BNR34 Compatible Engine RB26 Product Description Tuned engines require as much fuel mixture to enter the combustion chamber as possible. So a larger diameter design was selected to optimize flow rates. Due to the extremely high temperature conditions experienced in the combustion chamber during high power runs the durability of the valves were also addressed to improve