The Case IH Flex series harvesters are equipped with the innovative Terraflex® suspension system, providing an extended range of adjustments. Thanks to the all-welded frame, high-performance knife drive and smooth mass feeding system, these harvesters are versatile and durable; they are designed to work in tandem with high-performance Axial-Flow® combines.

This mod includes all the Case IH Terraflex® 3020 size options: 20, 25, 30, and 35 feet. All models have opening side panels and divider tips that dynamically adapt to the terrain of the field.

Configurations:
- Model year (2011-2020 / 2021-2026)
- Mass dividers

Case IH 3020 TerraFlex 20FT
- Category: Grain harvesters
- Price: $55,008
- Working width: 20 feet
- Working speed: 6 mph

Case IH 3020 TerraFlex 25FT
- Category: Grain harvesters
- Price: $59,750
- Working width: 25 feet
- Working speed: 6 mph

Case IH 3020 TerraFlex 30FT
- Category: Grain harvesters
- Price: $76,658
- Working width: 30 feet
- Working speed: 6 mph

Case IH 3020 TerraFlex 35FT
- Category: Grain harvesters
- Price: $86,259
- Working width: 35 feet
- Working speed: 6 mph

In version 1.0.0.1:
- Fixed the 20-foot header collision: there are no more invisible collision zones protruding several feet on the sides.
- The capture width parameters for the AI and GPS of the 30-foot harvester have been adjusted: now, when the AI and GPS are working, there is no raw crop strip between the aisles.
- Fixed an issue that caused the harvesters to spontaneously slide forward from the shipping trolley; adjusted the center of gravity.