Pre-load Strut Spacer

[TonyAT4]

Bought my AT4 used so don’t know the history but this looks to be a preload spacer and not factory?

 

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[Andystoy AT4]

I think you are right my stock 22 Ref At4 does not have the spacer

 

[TonyAT4]

Well this would explain my vibration at highway speed- 1.75 Readylift plus a strut spacer=too much lift. CV joints not happy.

 

[Andystoy AT4]

Here is the pic FYI.

 

[Andystoy AT4]

Your pic shows a tire size of 285/85/20 which is 39.1" in diameter vs my stock 20" which are 32.5" in diameter so a difference of 6.6" or 3.3" in radius so probably the reason for the spacer and the lift.
The stock cv jts. may be outside their design range as you mention and you may have to chat with the lift folks to see what their recommendation is.
Your speedometer reading at 65 mph stock setting would actually be running 78.1 mph.
I have no experience with lifted or levelled kits and am happy to stay at stock ride height.

 

[TonyAT4]

Tires are actually 285 65 20
34.6x 11.2.
Going to pull the Readylift kit off and put back to the way it was. Really only wanted the UCAs as I’ve seen the carnage from leveling with them.

 

[slythetove]

Your pic shows a tire size of 285/85/20 which is 39.1" in diameter vs my stock 20" which are 32.5" in diameter so a difference of 6.6" or 3.3" in radius so probably the reason for the spacer and the lift.
The stock cv jts. may be outside their design range as you mention and you may have to chat with the lift folks to see what their recommendation is.
Your speedometer reading at 65 mph stock setting would actually be running 78.1 mph.
I have no experience with lifted or levelled kits and am happy to stay at stock ride height.

285/65

At the diameter you indicate it would require a hell of a lift!

 

[mocomajek]

I have this same spacer on mine which I also bought used about 2 months ago. No other spacers, truck sits level and rides great. I’ve been wondering this for a while if this was factory too.

 

[TonyAT4]

Look at the bottom of your strut-small round pucks there? It’s a rough country 2” kit from what I’ve researched.

 

[slythetove]

I have this same spacer on mine which I also bought used about 2 months ago. No other spacers, truck sits level and rides great. I’ve been wondering this for a while if this was factory too. View attachment 3895View attachment 3896

Yep there’s that “leveling” kit spacer.

Be careful and talk to some of the guys here that know about this stuff because I’ve seen failed stock control arms when guys use some of these level kits. Not trying to alarm you but since it’s not factory you take on any risk and if something in that front suspension breaks warranty isn’t going to cover it due to that modification which changes angles and puts different stresses on parts.

 

[mocomajek]

Yep there’s that “leveling” kit spacer.

Be careful and talk to some of the guys here that know about this stuff because I’ve seen failed stock control arms when guys use some of these level kits. Not trying to alarm you but since it’s not factory you take on any risk and if something in that front suspension breaks warranty isn’t going to cover it due to that modification which changes angles and puts different stresses on parts.

No worries man, I’m not alarmed. I’ve been shopping around for new UCA’s to help out the front end.

 

[slythetove]

Right on!

 

[mocomajek]

Just ordered some Rough Country UCA’s . Once I get em installed I’ll update y’all.

 

[mocomajek]

Installed this morning with a new alignment. Rides great.