The McCormick 4221432M91 Mass Kit is a genuine OEM component designed for McCormick X4, X5, X6, X7, and X8 series tractors. This original mass kit provides essential counterweighting for improved stability and operational efficiency. Manufactured to McCormick's stringent quality standards, it ensures precise fitment and reliable performance across various agricultural applications. Weighing 0.12 kg, with dimensions of 95 mm length, 51 mm width, and 51 mm height, this kit is crucial for maintaining proper machine balance.