Alternate Rotary Rowcrop Option


The ARRO® corn head conversion system is developed by Kopper Kutter LLC of Cimarron, KS, under US Patent number 10,123,480

ARRO® Corn Head Conversions:

  • Take advantage of the reliability of late-model corn heads to reduce maintenance costs and downtime.

  • Leave 12-15” of stalk in the field for cattle feed and to hold snow and fight wind erosion.

  • Work at normal cutting speeds even in downed milo.

  • Can also be used for harvesting sunflowers, millet and industrial row crop hemp. 

ARRO® is available now for these late model corn heads:

  • Deere 40- and 90-series, Deere 600C series, including all 608C, 612C, 616C and 618C

  • CaseIH  1083, 22- and 24-series (example 2408 and 2412), 32- and 34-series, 44-series

  • New Holland 96C, 98C and 99C

  • Claas corn heads for Lexion and Claas combines, Models 8-30, 12-30 and 16-30

  • Gleaner (AGCO) Hugger:  Optional removal of stalk roll shafts is NOT reversible for AGCO corn heads


ARRO® Corn Head Conversions to Harvest Sorghum, Sunflowers and Millet

1‐ROW Kit NumberConversion For
KK‐882159Deere 40 & 90‐Series
KK‐882118Deere 600C early 8‐tooth
KK‐882076Deere 600C late 6‐tooth
KK‐882365CaseIH 3200‐3400‐series
KK‐882365CaseIH 22‐2400‐series
KK‐882365New Holland 96‐98‐99C
KK‐883165CaseIH 1083
KK‐883264CaseIH 4400‐series
KK‐882670AGCO Gleaner Hugger
KK‐883249Claas 8‐30, 12‐30, 16‐30
Installation & Service
ARRO® Conversion Process

The ARRO® conversion process is not difficult and can be accomplished in 3-man hours per row, using simple tools; a complete set of instructions and a drill template are furnished with all ARRO conversions. This summary shows the basic steps required for most corn heads:


Remove stalk rolls and factory deck plates from the corn head

Remove factory chain guides and gathering chains and set aside—if gathering chains have more than about 2-1/2” of droop, replace them.

Clean off the decks as shown here, remove all dirt and rust.

Remove the stalk roll drives (sometimes called binoculars)
from the row unit gear cases and replace with the cover plates furnished in the kits


Using the template provided drill holes
required per the kit instructions.

NOTE: A magnetic based drill and 16mm or 11/16” precision hole cutter is recommended for drilling the two holes required for the disc/sprocket assemblies.


Following instructions in the installation guide for the specific header, install ARRO deck plates, disc / sprocket assemblies, chain guides, OEM gathering chains and chain tensioner assemblies. Retighten gathering chains to factory specifications. Refill any lost gear box lube.

After clearing all tools from the work area, test run the header to make sure there is no clatter or loose gathering chains.

We recommend fine-tuning your auger and row unit (gathering chain) speeds to the specific corn head conversion.

Dealers will have that information.


Steve Dewey, Cimarron, KS(runs Deere 616C)

ARRO® is the best milo harvest header we have ever had.    We used to have 4 row heads to keep 3 of them in the field, because one was always down for maintenance.  To run row heads you had to be a full-time mechanic!  The biggest benefit is that ARRO® takes advantage of the durability of late model corn heads. We just don’t have any downtime anymore. A bonus for us is that even in down or lodged milo we can leave standing stalks in the field to catch snow and reduce wind erosion.”


Jeff Lankas, Atwood, KS     (runs two Deere 1293’s on Gleaner Combines)

ARRO® Cornhead conversion: What an amazing product to get your down milo back in the bin”


Jeff Uhland, Eads, CO   (runs Deere 1293 and a CaseIH 2412)

“The ARRO® conversions are the real deal! If you have milo in 30” or similar rows this is the way to harvest. We are 5 generations into growing milo in southeast Colorado and we’ve tried everything; these ARRO®s run and run while doing a great job.” 


Heath Asher, Dumas, TX  (runs a Deere 616C with plans to convert another for 2019)

ARRO® is the best thing to come around for sorghum harvest since the combine cab !   We have been growing mostly seed sorghum with some commercial dryland milo for over 30-years and have used every type of combine header made.  ARRO® is simply the best.  We’ve had lodged 7’ tall seed sorghum and with the ARRO® system we can get every head, even if they are hanging straight down !”


Clinton Stiawalt, Beeler, KS     (runs a CaseIH 2408)   

“Huge improvement over other conventional row crop headers being used. Raises the down milo up off the ground so you don’t have to take so much material through the combine, giving you cleaner grain, and it leaves plenty of stalks in the field for No-Till.  We can run twice as fast as a row crop header. ARRO® uses the reliability of the corn head’s enclosed gear boxes and standard parts, and daily maintenance is way less, with no grease zerks and knives/belts to maintain.”


Mark Urbanezyk, White Deer, TX   (runs two CaseIH 2412’s)

 “ARRO® Conversions did a good job, very simple, very impressive.”


JB Stewart, Keys, OK    (runs five Deere 1293’s)

“I have waited this long in my 50-year career in sorghum looking for something like the ARRO® conversions. We started out in 2016 with one header, it worked so well that on a rainy day we did another one, then another one, and we’re up to 5 ARRO® conversions now.  It is the only way to harvest Sorghum.”


Dave Stroberg, Hutchinson, KS    (runs Deere 612C)

“In my 45-years of growing sorghum, I have used about every different type of milo header, ARRO® is the best!   By using the Deere corn head as my base, I have a rugged and reliable milo header.   Because we don’t have to take stalks and leaves through the combine, even in lodged milo, we can go faster and reduce separator hours and fuel consumption, saving us money in our operation.  Leaving the taller stalks helps us because we do graze cattle over the winter.”


Sam Beauchamp, Farnsworth, TX  (runs Claas 12-30)

“We have run about every type of row head and grain platform for milo, the ARRO® system is the best.  It is simple, reliable and quiet, and ARRO® takes full advantage of the durability of my Claas corn head.   There is no comparison to the old row heads that required so much maintenance.  Plus, with the row heads we were putting 1980’s technology on 500+ HP combines, just asking for trouble.”


Jim Massey, Robstown, TX(runs Deere 893)

“I bought an ARRO® conversion kit in 2016 and harvested about 1500 acres, it did a great job, we had a few minor issues with it but the guys at Kopper Kutter and Shield worked with us very well and got the problem solved quickly, it did a great job harvesting milo that was very clean, we managed to take mostly heads and did not have to take any leaves, we did not have to pick up any down milo but I have great confidence that it would work well in that situation. “


Alan Schnewies, Dodge City, KS (runs two CaseIH 3412’s)

ARRO® conversions are reliable with very low maintenance.  ARRO® improves combine efficiency by 50 percent in down milo.  I have run all season for three years now with zero maintenance. “

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 ARRO® is a registered trademark of Kopper Kutter, LLC and the product line is protected under US Patent # 10,123,480

 Distributed by ShieldAg Equipment