Install F150 Bilstein 5100 or 6112 products on my 2004 Expedition?

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Vincent Vega

Vincent Vega

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@OverlandExpy do you want to re-gear, or did you already re-gear for the 315s you are running? I think that is the same size as Raptor tires. I want new wheels and am considering a set of Raptor takeoffs, and usually the seller includes the tires and wheels together. The wheels and tires would be $1,000-$1500 but gearing would double or triple that cost. Thanks
 

Jb14

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@vincentvega just for your info I have 35/12.50.17 and did not regear and have been running this setup since 2016. Regearing would be beneficial but I never had a big issue with the stock 3.73 gears. Yes I did lose a bit of acceleration at the initial take off but very minor, and I lost about 2 to 3 mpg but that also is considering the lift. My speedo is off a bit but I'm used to it so doesn't bother me (example: when my speedo indicates 60 it's actually 65) NOw if I could ever put 37s on I would do the spend and regear.

Not sure if this helps and just my opinion
 

OverlandExpy

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@OverlandExpy do you want to re-gear, or did you already re-gear for the 315s you are running? I think that is the same size as Raptor tires. I want new wheels and am considering a set of Raptor takeoffs, and usually the seller includes the tires and wheels together. The wheels and tires would be $1,000-$1500 but gearing would double or triple that cost. Thanks
Oh I'm 100% planning on regearing to 4.56. Just saving up some cash because I want to put in Detroit lockers in the front and rear when I regear. Whole setup will be 4k or something. Almost as much as I paid for the truck!
 
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Vincent Vega

Vincent Vega

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@OverlandExpy and @Jb14 got it thanks for the info. ARB lockers will run about $1200 each, gears another few hundred each axle, and Raptor tires/wheel takeoffs roughtly $1500. Plus labor if you have the diffs done somewhere. And plus the ARB compressor (and figuring out how to mount it). Thats a $ chunk.
 

Laporterican

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@Vincent Vega What are the part numbers for the Bilstein 5100s you used? When I'm done with my manual swap on my Navigator I plan on doing a bunch of front end work, I'd like to upgrade the suspension while I'm in there. I've been quite happy with the 5100s on my '99 F350 7.3L.
 

Laporterican

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Disclaimer please verify yourself:: I have done quite a bit of research on this my self and it appears the 5100 for the F150 will work on the front (in fact aftermarket A-arms and such will work as well) For the rear Bilstein makes a 5100 for 2018 expedition that may work.

***Again please verify I have only done a cursory but looks good***
Have you measured or compared 2018 Expedition rear shocks? My wife has a 2022 Timberline, I could easily measure and compare. I have a 2003 Navigator to make the comparisons with. Often times, manufacturers will keep costs down by using identical geometry across multiple generations of the same vehicle.
 
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Vincent Vega

Vincent Vega

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@Laporterican I have data from manufacturers for the Gen 4, and did some reading that suggest the overall spring lengths are similar between the Gen 4 and Gen 2 rear coilovers but there is less suspension travel (Gen 2 has the highest amount of travel). Also I cannot recall if the mounts are the same. The rear suspension on the 2007+ is different than previous years, but its unclear if the spring rates are the same and if the Gen 4 coilovers would work in a Gen 2. It has been about a year since I did the research so I can't recall all the reasons I decided not to try Gen 4 parts on my rear suspension. I know I considered it because there are some good aftermarket parts available for Gen 4s (Bilstein and others). Could you please take a few photos of your Gen 4 rear suspension and post here, including the upper and lower mounts? That would be pretty cool to see. Thanks.
 

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