Set benefit for level 45-55 pink sets

TL;DR set benefit applies only if all parts same level. Maybe?

So I find myself being slow in all runs and wondering why. Keep buying speed juice to compensate, but im still slow! Turns out that the Tek'Graval and Sur'Manx sets give some kind of speed boost. So I decide to put them together. The parts range from level 45 to level 55. I don't pay much attention to it, at first guessing that each level has a part to make five at level cap or something like that. But no, its the same continuum of parts from 45 to 55, and the levels are 45, 48, 50, 53, 55. Those are five sets, and all of them need to be the same level for the set benefit.

I did not know this. Next part is a funny and sad story, totally useless, can be greentext.

>Be needing level 50 part, because the rest of my set is level 50.
>Kindplayer2 lets me borrow but asks level 55 I just say yes
>Kindplayer2 gives me level55
>I say nooo I need level 50 and give back level55 to Kindplayer2
>Kindplayer2 gives me level 50 back but says pls return as its only one they have
>Kindplayer1 lets me buy for cheap
>Kindplayer1 then gives me level 51 part just like that
>I return level 50 part, Kindplayer1 says "yes", we chat for a bit
>I return level 50 part to Kindplayer2 saying I purchased one
>Now im stuck without set benefit
>Kindplayer2 in base
>WTB) Tek'Graval Engie back level 50

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XD RIP

there are so many levels of the sets
OP has planetkiller, Mando has battlefury
engie has Riven and Death don't know why

I just managed to make one level 55 planetkiller set, but only have a large numer of riven and death sets lol
have so many questions

What levels are the sets available at?
So if all five parts are riven do you get set benefit?
if all five parts are same level do you get set benefit?
is there a set benefit and what is it?

Anyhoo, started using spike so that solved the speed problem :D

This is getting out of hand lol, these are all the items have seen IG in auction
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Cybest gave all the answers again! It makes most sense to me so going with it
1. The Riven and Death thing is a naming issue, Tek'Graval parts of the same level are a set
2. The set benefit applies if all the parts are of the same level
3. The set benefit for all the sets is extra speed


Also found out that the set benefit applies with the orange chest parts