The Fox’s that came with my Kelderman are Fox part# 985-24-068. Extended 28.95” Compressed 17.85” Travel 11.1”

If you matched those specs, you could use any brand you wanted!

 

Right ……… the B8 5100 33-170794 is Extended 23.64" Compressed 14.72" Travel 8.92"

So the travel on this Bilstein is 2.18" shorter (11.1" - 8.92" = 2.18") …… so ………. not sure if this Bilstein will work in the Kelderman kit.

and

The midpoint on the Bilstein is at 19.18" and midpoint on the Fox is at 23.4" ………. so there is a 4.22" difference in the midpoint...…… so ….. this Bilstein will probably not work at all unless brackets were significantly modified.

 

I think you’d need a different model Bilstein. The Kelderman shock mounting points are farther outboard than the PMF so the shocks need to be a bit longer. I’m sure you can use any shocks you want in either manufacturer’s bracket as long as they’re the right length.

 

Right .. thanks! ……. I've been looking through the Bilstein Catalog and identifying the ones used for "steering stabilizers" to try and find something. The closest one I found is 27.56" extended vs the 28.95" Fox which is still 1.4" short.

I will probably have to call Bilstein to try and find something that will work.

 

Watch what you end up with. The Kelderman kit comes with shocks, not stabilizers. A stabilizer provides resistance in either direction but doesn’t want to naturally extend like a shock would. Using stabilizers in a dual setup wouldn’t gain you much. Using a shock in a single setup would always be trying to push the truck into a right turn.

 

Until about a week ago, all I heard was that the stock position for the damper was preferable to the dual. Now I hear the opposite. Maybe it’s different for different uses.

 

Replaced stock sreering damp at 3000 miles with a fox, just wanted to settle the front end after hitting potholes and frost heaves, Big difference, i have none, notta, hint of steering shimmy or any other funny business with the steering. Stock F250 on stock 18” goodyears, stock shocks. 20 minute job, mounted in stock location.

 

Which part number did you use?

 

Amazon::: fox # 985-24-0001 single ss. factory replacement $158.20

 

Thank you sir!

 

Your welcome, If you have a non wobbling truck, you will be satisfied with this.

 

The truck seems fine at lower speeds, once I hit the highway, she starts feeling like an old F100. Worse when I hit a pot hole.

 

I quoted you so you would see this since it seems you understand the dual system more than some.

Above I put the specs for the Bilstein that I presume (or was told) is used for the PMF dual stabilizer......#33-170794 collapsed 14.72" extended 23.64" travel 8.92"

Then I read where someone was shipped and installed incorrect shocks with not enough travel and broke brackets …………
Then I read where someone said the shocks needed 10" of travel (5" each direction when centered).

Well if that's the case ………… that Bilstein shock may not work even in the PMF dual system. It only has 8.92" of travel and if centered on install will yield only 4.46" of travel in each direction. Therefore, I don't see how that Bilstein will work in the PMF install unless the 10" travel is overstated. But, if 10" is a min requirement/spec, I can understand how a couple of people have broken brackets.

Still searching for a Bilstein that will work in the Kelderman dual...……………………….

 

Lots of folks have used the PMF kit with the supplied Bilsteins and are fine. The broken bracket you’re talking about was a one off I think. I PM’d the member that had that issue and he’s not 100% sure how he ended up with short shocks but I was thinking it was because he’s got an F-450 which turns sharper and so it needs shocks with more travel. That’s just a theory though!

Read through PMF’s instructions. They provide some specific measurements for using their Bilsteins or Foxes. The 5” comes into play when they’re talking about the Kings.

 

Based on the info above regarding the Fox shock that Kelderman uses, the Bilstein 33-104652 is very close. Collapsed length 17.01", extended length 28.00"

The Bilstein 33-230399 is 17.89 to 29.38" but has a stem mount on one end instead of an eye.

Rather than spend $600 on a dual setup, I'll probably install a Bilstein, Fox, or King in the stock position. King is spendy but still less than half of a dual stabilizer.