Add versatility to your Ultima™ Series ZT1, ZT2 or ZTX, or other Z-Force, RZT and RZT-S from Cub Cadet's line-up of Zero-turn equipment. From Grass Collectors, Striping Kits and Mulching Kits to beautify your lawn, to Armrest kits and Light kits which add comfort while completing your chores. Cub Cadet 42 in. Mulch Kit for Riders and Zero Turn Lawn Mowers (2012 and After) This mulching system is designed to turn your ordinary grass clippings into finely ground mulch . The high-lift baffle design combined with the included mulch plug will cut and recut grass clippings into smaller particles.