Well renowned, Estes Concaves Unveils Next-Generation XPR3 Concaves for John Deere, Case IH, & Fendt Combine with Artificial Intelligence integration and Yield Optimization. The XPR3 Concave System's patented bar and design, offers a technological advantage that eliminates downtime and the need for covers, inserts or changing concaves between crops or harvesting conditions, distinguishing itself from OEM and competitor concaves.