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XPR Concaves™

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#1 Concave System for John Deere & Case IH combines. Did you know every rotor combine loses 3-5 bu/acre? That’s $30,000 on the ground, year-after-year, on 1,000 acres of soybeans. But there is good news with our XPR Threshing / Separating Concave System – The BEST money you will EVER spend on your combine. Exclusively Sold Here.


  • PERFORATED Cover Plates
  • NO Changing Concaves
  • STOP Rotor Loss
  • 70% MORE Capacity
  • ELIMINATE Fines, Cracks & Splits
  • 2-3 MPH Faster Ground Speed
  • 5000+ Bushels/Hr
  • NO MORE Whitecaps & Pods


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Combines: John Deere S & STS / Case IH Flagship & 88 Series
Crops: Corn, Soybeans, Wheat, Milo, Oats, Canola, Popcorn, Edible Beans, Chickpeas, Lentils, Rye, Sesame, Sunflowers & More
Includes: (3) Threshing Concaves with Preforated Cover Plates & (1) Xtreme Separator Grate (4 Parts Total for John Deere)



  • For ALL Crops
  • Preforated Cover Plates
  • No Changing Concaves
  • 3x More Life
  • No More Downtime
  • Slower Rotor Speed
  • Less Grain Damage
  • Cleaner Grain Tank
  • Faster Harvest
  • More $$$ In Your Pocket

XPR concaves thresh like small-wire concaves yet with more capacity than round-bar concaves. We are the only concave system that can thresh all crops and with less grain damage. In hard-to-thresh wheat, our cover plates keep the material in the threshing action longer to ensure complete threshing and without white-caps. In high-moisture corn you don’t have to run your rotor as tight and as fast and grind the corn to get it to thresh, plus our concaves don’t plug. Although many farmers brag on them most in adverse condition, in normal conditions you will be amazed as much more you enjoy harvesting without fighting your combine all day.  Our concave system is simply the best and thousands of farmers will tell you the same.



Every part of the system is engineered for a particular purpose but the key in all of it, to help you keep your rotor full. The bar is designed to slow the material down so you have maximum grain-on-grain threshing, the cover plates are designed to cushion the crop and to further prolong material rubbing on material for complete threshing. The concaves are significantly more open so that as soon as grain is threshed, we can get it down and onto the augers in the tank – no overloading your separation section. And lastly our grates disrupt, fluff and toss the crop mat to get any remaining loose grain out before being lost out the back. The bottom line, you won’t find a better investment or return on your money than with our concave system.


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    XPR Concaves John Deere




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