The RPR Combine Concave System developed by Donnie Estes of Frankfurt, Indiana is now available exclusively through Copperhead Ag Products.

Copperhead Concave Systems are true to the original RPR Concave design including a notched round bar, increased space between the notched bars and easily adjustable/removable cover plates.

Made with hardened steel for a long wear life, these are designed to last the life of your combine and can help eliminates rotor loss. It is designed to harvest all crops, with simple adjustments.

John Deere and Case IH combine owners alike can benefit from a highly adaptive, easy to use concave system.