Tuff country 4 inch rear blocks, Upper control arms

hi guys I’m new to this, I try searching but couldn’t find the answer. I have a 2017 trd sport and currently I have 2 inch spacers in the front and bilstein 5160 in the rear. I was wondering if I got 4 inch rear block in the rear would I need to go aftermarket on the upper control arms ? Thank you

https://www.carid.com/tuff-country/...pn-97076.html?singleid=109493152&url=89163315

 

Uh why would you need arms for the rear

 

If you can still get good alignment, no.
You'll need to do something with the rear shocks though; like Bilstein B110 5100s.

 

Why do you need 4in in the rear, you’re going to have huge rake if you do that, not to mention your shocks aren’t going to work for that length.

 

The front is a little higher, I was thinking 4 inch is a little high. Would a 2 inch be good for the rear 5160?

 

Yes, stock rake is 1in higher in the rear if I remember correctly, 2in front and 2 in rear will keep stock rake.

 

If that's a work truck, get some beefier leaf springs.
You'll eventually destroy the stock ones.

 

Yeh, Ima do that pretty soon. I don’t really carry stuff in this truck just occasionally ladders. I used my 2005 f250 for the heavy stuff.

 

Thank you so much

 

You’re welcome.

 

I am concern about the block I bought online.
Pls see the picture below.