Poly or stainless round fenders

[Quadtrack]

And is the oscillating fifth wheel at back of lead necessary or just go with the fixed lo-lube Jost? I haven’t found any weight specs.

Not sure about ‘necessary’ but I did get the oscillating fifth on last two legacy trailers. I think if you are using it in and out of fields, it lessens the strain/twist on the trailers and should mean less cracking issues (I haven’t had any) would add very little weight. Needs frequent greasing. Cost $2500 extra.