I have a F450 and I don't see it listed as an option for fox shocks 2.5

Would shocks for a F350 be compatible for the F450?

 

my experience with trying to put fox 2.5 shocks on an f-450 was an expensive and ultimately, not successful adventure.

the truck in questions was a 2010 f-450 and like the current year trucks...fox list 250, 350, 550 but oddly, they dont list 450.

so I pulled my stock shocks and measured them compress and extended. located the closest size fox 2.5 shocks and learned that I needed a 3 inch lift in the front and a 4 inch lift in the back just to get the shocks centered....else...I would only have about 3" of shock shaft exposed which means they would bottom out.

so a few hundred bucks for the front and rear lift, 2400 for front and rear fox 2.5 with resivoir. end result...shocks where too soft for my taste. apparently all fox shocks reguardless if you buy for a 150, 250, 350, 450, 550 are valve'd for a shopping cart and if you want firm shocks you have to send them in for re-valving...which takes 12 plus weeks.

I played with the nitrogen pressure (tank , valves, and hoses to refill cost almost 300) and that did not solve it.

I added the float oil and it helped for the front, but not for the back becuase the rears did not sit in the right position to take advantage of the float oil

I found this not to be a plug and play solution. it would be great if fox would valve these shocks based on GVWR. but that would make too much sense.

my stock 2019 f-450 shock are much firmer than my past fox 2.5 shocks were on my prior 2010 f-450.

tried blistiens, ranchos, etc. didnt like any of them.

you should talk to a few owners of fox 2.5's on f-450's before pulling the trigger. I spent close to 3K for everything and it was a total waste of money.

the truck will never ride like a Cadillac no matter how much money you throw at it.

 

I put fox 2.0 F350 shocks on my 2017 F450. Early this year Fox told me they hadn't had a stock current generation (2017+) F450 in their shop to test fit or develop anything.

IMO on these 450s there's such a short amount of travel on the front between the big axle housing and the bump stop that you don't have enough usable stroke length to make a big shock upgrade worth it without a lift.

 

2.0’s seem a more common and less painful adventure.


how do you like the 2.0’s

 

Thank you for your response. It's extremely helpful and I am staying away from the 2.5s

 

Well the factory Ranchos I took off were completely shot so I don't have much to compare to. Especially the rears. I'm a big guy and could push them right through the stroke on the shop floor in quick fashion. Driving the truck empty wasn't horrible with the bad shocks, but loaded it would blow right through the travel to the bump stops on rough bridges and holes. Gave a bad jolt from the rear of the truck.

The 2.0s are very stiff for a plain monotube shock. Requires a floor jack to compress them into place. Empty ride is a little better than the blown out shocks, but significantly less rear end hop over rough breaks. IMO the spring rates on these trucks are so high that empty it's tough to get much of a ride improvement from shocks alone. They need weight on them. Here's where the real difference is noticed when the tuck is loaded. Much smoother, more controlled, and no more harsh bottoming. Would purchase again. My only complaint is I had to source my own boots for the shocks. No off road experience with them yet.

Just spoke with my dad who installed some silastic shackles on his 2008 F450. He's impressed with the empty ride improvement after one test drive. Might try them on mine next.

 

I can vouch for the sulastics . Only con is the rubber has a 3 year life. So you’ll need to rebuy .

also look into the Sunni springs .

 

A buddy runs King's on his 450. He tells me they make a significant improvement. A bit more $$ but worth it in his mind.

 

yes , kings are custom. They send you a form which requires measurements and gvwr related info. 12 or so weeks.

but probally the absolute best.