The IS® 2500Z series of mowers continues to expand the Ferris zero-turn line-up offering diesel power with features and benefits that no other mower can. Featuring 52”or 61” iCD™ Cutting System decks with our longer life greaseable cast-iron spindles, this machine is built to handle the rigors of professional landscaping. There is not another product in its class that can match the value this machine offers, especially when paired with the benefits of Ferris’ patented four-wheel suspension system. Model Engine Deck IS2500ZY20D52 20 gross HP Yanmar Diesel^ 52" IS2500ZY24D61 24 gross HP Yanmar Diesel^ 61"