Each is designed to be durable and aggressive with larger grate openings customized to each crop, reducing dockage and rotor loss, improving your crop quality and helping you save fuel.

The split-frame MAD Concaves™ for John Deere® S/STS and New Holland® combines give you even greater control, flexibility and harvest efficiency.

Their modular frames are installed permanently while smaller, lighter concave inserts are quickly slid in and switched using two simple bolts. Thanks to this innovative design, you or any farm operator can easily change concave configurations in minutes, getting the most out of each crop without spending hours on installing a new concave and recalibrating the combine.