zhntr

Didn't see anything in the install instructions whether to install the Bilstein 5100 rear shocks boot up or down.

I installed them boot up, thinking less water and stuff to get in the boot; however, boot down has the writing on the shock right side up.

Does it matter? Can't find anything on the Bistein site with an answer...

zhntr

Of course, as soon I as post this I find a a bunch of differing opinions...

BTW, this is on a 2013 XLT 4x4, screw.

From http://www.allshocks.com/t-faq.aspx#10:
Do I mount the shocks with the boot pointing up or down?

With the internal design of the Bilstein monotube gas shocks, it does not matter whether the shocks are mounted with the shock rod side up or down. There are some minor advantages in longevity and overall suspension effectiveness with the shock rod pointed down, and there are many instances where Bilstein has changed the orientation to take advantage of these minor improvements where there are no clearance problems. If there is an option, we recommend mounting the shock with the shock rod and boot pointing down, but in the grand scheme of things, there is no noticeable difference.

From a couple other sites:
Definitely with the wording right side up...

From another:
I called Bilstein and they stated it didn't matter.


Freaking info overload....

zhntr

Then this says according to a Bilstein tech, always mount them labels up.

From http://www.truckspring.com/blog/post...ks-upside-down

The majority of Bilstein shocks mount with the boot on the top of the shock. Bilstein does have some shocks that do have the boot on the bottom of the shock and the same size mounting eyes on each end. As a general rule with all Bilstein shocks, you should pay attention to the label. Bilstein tech advises that you should always mount your shocks so that the Bilstein logo is right-side up.

WestTXReinhart

When I installed mine a few years ago I remember reading to install them boot down. Not sure if I read it in the instructions or on the interwebs.

06F150CFCT

Installed mine with the boots down...aside from not seeing the boots when looking into the wheel well, it just made more sense to me. But I have also heard of people mounting them up and down with no issues.

MCDavis

iTrader: (1)

Boot down is the recommendation because this will keep water/debris from sitting where the shaft enters the body and cause premature wear. The boot helps protect the shaft from debris during travel.

zhntr

Thanks. You have me convinced that "boot down" is the way to go. I'll get them flipped....

kravenf150s

I have mine boots down. You can read the label.

PawPaw

Recommended is boot down but they will work either way.

eyeflyone2

After having average luck with a set of Pro Comps, I put a set of B5100's on the rear of my 2015 SCab. A HUGE difference. I had them on my 2011 and it made that F150 handle like a Porsche. They were mounted with the boot DOWN (See several YouTubes). These are the best shocks for our trucks.