Pics: 5100's - 2"AAL

Technical Service Bulletin.

It applies to the rear leaf spring pack in the context we're discussing. The three leaf pack from the factory is/was inferior and caused a lot of drooping of the bed under moderate load. Many people get them upgraded to the improved four leaf spring pack.

 

ok i think i got it. So TSB is just the stock leaf pack from toyota? Since im stock do i have the TSB leafs?

 

No...TSB is a Technical Service Bulletin. Certain model Taco's from around 2005 though 2011 have inferior leaf packs in the rear (3 leafs) which, under load cause a harsh ride and bottoming out at the bump stops.

The Rear TSB that you read about alot is talking about folks getting upgraded 4 leaf packs (and for some models shocks and bump stops) that will compensate for the crappy ones that are on from the factory.

Does that help?

 

good explanation! Thanks!

 

Another "noob" here...just bought an 05 access off road, and I have been researching suspension options on here as well. I don't want to hijack this thread, but I love the set up you have and am thinking of doing this myself, because my truck is really jarring on bumps...
Apparently the former owner of my ride had the rear TSB done.
So because I have a 4X4, does that mean I can't do 5100's all around (with the front at 2.5") due to a cv joint issue?

 

I love the way your truck looks, want to do the same with mine. I'm still curious to hear about your alignment, I've read that with over 2" of lift in the front you can't get the alignment right or it atleast won't be very good.