Need new shocks got $1000 spend my money!

[rwillia4]

I just checked the Fox website and here’s the specs:

2.0 IFP 0-1.5: 18.5” - 30.11” (11.61”)
2.0 IFP 1.5-3.5: 20.2”-32.82” (12.62”)
2.5 PE 0-1.5: 18.35” - 29.83” (11.48”)
2.5 PE 1.5-2.5: 19.85” - 32.33” (12.48”)
2.5 HTO 0-1.5: 18.79” - 29.58” (10.79”)
2.5 HTO 2-3.5: 19.39” - 30.58” (11.39”)

I just measured my truck (2.5 PE 0-1.5) and I have 5-1/4” of travel at rest, which means I have 6-1/4” of extension travel (really good balance). The rear bumpstop has approx 4.5” to the axle, which makes all of this pretty much perfect.

A 2.5 HTO 0-1.5 will have 0.41” less compress travel (bad) and 0.3” less extension travel (also bad). A 2.5 HTO 2-3.5” will have 1.04” less compression travel (really bad) and .7” more extension travel (questionably useful).

I suppose if you don’t tow or carry high payloads, that’s fine, but I personally would never want to sacrifice an inch of compression travel. I also believe you are going to bottom out the shock before hitting the bump stop. All stock height SD aftermarket shocks spec a 19” max compressed length for a reason.

This is starting to look like the HTOs may not be a great choice for the rear of a F350/Tremor, but I get that the PEs are more than twice the price.

Ok, I had to think about what you were referencing, I think your text compared against the 2.5 PE 0-1.5. Not a complaint, just took some noodling to figure out.

I'm a math guy, I love the numbers you pulled, thank you. I compared them to my stock 2025 F-250 rear shock (some years may be different). The table below works off of the values MFP posted above and give the +/- of it all (red is less than stock).

Bottom line: there is no clear winner. But I think we can all agree the ride is better than stock!

 

[The Evil Twin]

Ok, I had to think about what you were referencing, I think your text compared against the 2.5 PE 0-1.5. Not a complaint, just took some noodling to figure out.

I'm a math guy, I love the numbers you pulled, thank you. I compared them to my stock 2025 F-250 rear shock (some years may be different). The table below works off of the values MFP posted above and give the +/- of it all (red is less than stock).
View attachment 269859

Bottom line: there is no clear winner. But I think we can all agree the ride is better than stock!

with all those numbers, it looks like the ones you ended up with are the right choice. As long as the bump stop properly limits the collapsed length.

 

[MrFancypants]

Bottom line: there is no clear winner. But I think we can all agree the ride is better than stock!

I went back and read your prior posts and connected some important dots.

You are using the Sulastic shackles, which lift the rear 1”. That puts you in that annoying gap between available HTO shocks (1.5-2”).

I recommend you measure between your rear bump stop and axle and compare that to the visible piston length at normal ride height. You may need a longer bump stop or some kind of spacer to ensure the bump stops engage before bottoming out your longer shocks.