Calmer BT Chopper® and Residue Management Upgrade Kits and Components for Geringhoff NorthStar Series Corn Heads

Calmer BT Chopper® Upgrade Kit

Follow Calmer’s 2-Step Process to Solve Your Corn Head and Residue Management Problems.

Step 1. Install Calmer BT Chopper® Stalk Rolls  

Reliable and effective stalk rolls are critical to a top-performing corn head. Calmer’s BT Chopper® Stalk Rolls have a patented “open window” design in the front to guarantee 100% traction of stalks and superior feeding in both standing and down corn. The 10 razor sharp knives on each roll cut, chop and shear cornstalks into confetti-like pieces for accelerated decomposition. As a result, you’ll be able to more effectively manage residue during tillage and planting. 

Step 2. Install Calmer Multi-Zone Beveled Stripper Plates 

The contour of the Calmer Multi-Zone Beveled Stripper Plates emulates the butt of the corn ear, which helps reduce butt shelling while simultaneously allowing husks and leaves to pass through the stripper plate gap onto the ground, not into the combine. 


Get MORE than you bargained for this fall with Calmer's BT Choppers® and Residue Management Upgrade Kits 

Don't pay the hefty price for a new OEM corn head when you can yield better results at a fraction of the cost by simply upgrading your current head with Calmer's patented BT Chopper® Replacement Stalk Rolls and Residue Management Upgrade Kits. With Calmer's patented revolving window in combination with 10 razor sharp knives, Calmer's BT Choppers® cut, chop and shear cornstalks into confetti-like residue for truly unrivaled residue management performance.

Agronomic and Mechanical Advantages

Mechanical Advantages

  • Compatible with all Tillage Systems
  • 25% Less Hp Needed than with Chopping Heads
  • Superior Cornstalk Flow to Engagement
  • Better Ear Separation
  • Less Tire Wear
  • Less Butt Shelling
  • Increased Harvesting Speeds (Achieved through a combination of installing Calmer® products and proper combine settings)
  • Lower Spread Load 

Agronomic Advantages

  • Unmatched Residue Decomposition
  • Warmer Soils
  • Drier Soils
  • Increased Earthworm Populations
  • Reduced Nitrogen Penalty
  • Easier Planting
  • Higher Yields

For more information on our BT Choppers® or Residue Management Upgrade Kits, call us at
(309) 629-9000 or check-out our product brochure below.

"I've been using Calmer's Trash Reduction system since 2004. It definitely reduces trash. No reason for the gathering chains to go zing'n around at high speeds."

- Allen Berry, Nauvoo, IL