View Products

One Concave.
All Crops.

Learn More

Heavy Duty

View More

Featured Products

Drop Pan System

Bushel Plus

The Bushel Plus system is the authentic combine calibration system, designed to quantify your harvest loss by determining exactly how

Concave System (Case IH)

Copperhead Ag

The Copperhead Concave Systems utilizes notched bars for restricted flow. This allows more material in the concave area, increasing grain

Request an Instant Quote

Customer Feedback

Harvest Equipment

“In our canola fields we saved 1-3 bushels/acre which doesn’t seem like a lot but that’s anywhere from $11-33/acre! That’s huge! I’ve heard other farmers saving 7-8 bushels/acre just from using the BushelPlus…”


Elm Creek, MB, Canada
Currently using:



Update Machine

over Wifi

Temperature Range

-30°C/-22°F to 60°C/140°F

Drop Pan System

Bushel Plus

Save up to

0.8g = X Bushel/Acre

Loss Before

8.1g = X Bushel/Acre

Loss After

0.8g = X Bushel/Acre

Brush Mower

Jenkins Iron and Steel

The Jenkins Iron & Steel Brush Mower was designed with versatility in mind, utilizing Eaton Char-Lynn hydraulics into a gearbox. The deck is extremely heavy duty, constructed of ¾” steel and is completely free-floating, meaning the mounting plate moves independently of the mower deck, which makes cutting on uneven ground or ditches a breeze. Visibility...

Customer Feedback

High Capacity Grapple Bucket

“Received it ten days after ordering and was not disappointed!!!! Looks and works great on my 2017 CASE 321F compact wheel loader. THANKS”

-Doug H.

United States

Video Resources

Accurate Moisture Testing for Harvest 2018

Prairie Grain Analyzer

Customer gives feedback on Bushel Plus System

Bushel Plus

Is your combine calibrated to give you the most out of Harvest 2018?

Bushel Plus

Best Grapple Bucket on the Market

Jenkins Iron and Steel

NEW! 4 in 1 Bucket

Jenkins Iron and Steel

The Ultimate Brush Mower for Skid Steers and Loader Attachments

Jenkins Iron and Steel


NEW! Copperhead Ag Concave System

The Copperhead Ag Concave System originates from Donny Estes. He saw that rotor loss was an ongoing issue that OEM manufacturers did not prioritize. This concave was designed with removable...

Read more posts from Thunderstruck ag equipment More Posts