TOMEI BERY-RING SET For MITSUBISHI EVO 10 4B11 163102Brand TOMEI Product Number 163102 Compatible Car MITSUBISHI EVO 10 Compatible Engine 4B11 Product Description The function of which valve sheet is asked, is maintaining air tightness with a valve, and generally wear resistance is required. However, with the engine used by high rotation and high load, the cooling performance of a valve sheet becomes very important further, and it is greatly concerned with an engine output. When engine is high rotation