Bilstein 5100 shock install

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landryK

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Backstory: I have a 2” lifted 2010 4X4 limited (non- air ride). I swapped the shocks out with Monroe coilover and simple spacers for a lift. I have bilstein 5100s on my 2016 F-150 and enjoy the ride. After searching around, I did not find a definitive answer so I decided to risk trying putting this together. Enjoy!

Front setup:
I removed my Monroes and took the spring off of the shock. After doing so I noticed the spring perches are welded on the shock thus making them unusable. I went to the junk yard and got 2008 f-150 4x4 front shocks. I used the lower spring perches from there to put on my 5100s. I used the Monroe springs and top mount to put onto the shock.

Rear setup:
The rear is the same story as the front, but instead I took the lower spring perches from an expedition at the junk yard (fronts were too rusted so I used the f-150s).

Summary:
Overall the shocks I used were a “direct” fit. I didn’t have to cut or modify anything other than compress the springs from the old setup to add to the new.

When I completed the rear install and moved to the passenger install the truck was the same height with bilsteins and no spacer as Monroe’s with 2” front spacers. I swapped the driver side and then took it for a ride. After driving around town for a few miles I noticed the front dropped about 1”. From 39 to 38. There is a very slight rake, but the shocks are at the lowest setting. They can go up to 2.25” taller. As they sit at stock height they are 1” taller than stock.
 

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landryK

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Front setup:

BIL24-239394-2 09-13 F150 4WD
B8 5100 Leveling Struts
(2008 F-150 4x4 shocks for reference)
 

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landryK

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Rear setup bilstein 5100s with supreme suspension 2” rear lift

BIL24-285063-2 14-21 Expedition 4WD Bilstein 5100 Rear Strut Assemblies 0-1.5":
 

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landryK

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Nice write up with pictures. How is the ride quality now vs the Monroe’s?
Much better. The Monroe rears were okay, but the front had a sort of “bounce” to it after going over a bump. It seemed like it would bounce 2-3 times after the bump. With the 5100s it is just a quick bump and then it is over with.
 

eugene11

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@landryK do I read it right that both front shocks (bilstein for f150) and rear shocks (bilstein for expy) are set to the lowest groves? What was the idea behind adding 2" lift spacer to the rear instead of utilizing upper settings on shocks?
 

JasonH

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Much better. The Monroe rears were okay, but the front had a sort of “bounce” to it after going over a bump. It seemed like it would bounce 2-3 times after the bump. With the 5100s it is just a quick bump and then it is over with.

The repeated bouncing is symptom of shocks needing replacement. Sounds like the fronts were worn out.
 
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landryK

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@landryK do I read it right that both front shocks (bilstein for f150) and rear shocks (bilstein for expy) are set to the lowest groves? What was the idea behind adding 2" lift spacer to the rear instead of utilizing upper settings on shocks?
Yes you read that right. The reasoning is because #1 I already had the kit and #2 I wanted to have 2 inches vs 1.75 inches. Very minimal difference I agree but it’s just something I chose to do.

Next time I just wouldn’t buy the 2” kit all together.
 
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landryK

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The repeated bouncing is symptom of shocks needing replacement. Sounds like the fronts were worn out.
Yes, I agree. Unfortunately the Monroe shocks I bought were brand new and maybe had 1,000 miles on them. Not good ride quality at all in my opinion. Waste of money.
 

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