A trailer called the Silage Boss is used to transport lightweight goods like chaff or hay. Since its first release in FS17, it has had a complete makeover and is now more capable of handling silage with ease.
Boss Silage:
Cost: $63500
Two choices for capacity:
65270 liters of silage trailer fill kinds are realistic.
260000 liters of any kind of fill is unrealistic.

Thanks to BCbuhler Farms