New Fox 2.5 HTO front for stock Tremors

[Nick22]

I emailed Fox earlier today about shock fitment for my stock '26 Tremor. They said both of the current HTO fronts are too long, and that a Tremor-specific front was coming. It dropped this afternoon: 987-24-087.

https://ridefox.com/products/ford-super-duty-2-5-performance-series-3fb73500

They said 3-4 weeks before retailers have it. Rear stays the same.

 

[gmbpilot757]

That’s funny. There are plenty of us running them here on stock height with zero issue. I just installed mine 2 weeks ago and they came off another stock height Tremor. Nick@ApolloOff-Road should be able to confirm this.

 

[Trophyhunter01]

Ran mine in Moab no issues. What is the difference previous issue vs new ones. If the older Fox model is not correct should we all get new ones?

 

[Nick@ApolloOff-Road]

That’s funny. There are plenty of us running them here on stock height with zero issue. I just installed mine 2 weeks ago and they came off another stock height Tremor. Nick@ApolloOff-Road should be able to confirm this.

Ran mine in Moab no issues. What is the difference previous issue vs new ones. If the older Fox model is not correct should we all get new ones?

No issue with the current shocks and no need to change.

The old part number, 987-24-000 had the following dimensions:

• Compressed Length: 14.8"
• Extended Length: 22.19"

The new part number, 987-24-087 has the following dimensions:

• Compressed Length: 14.98"
• Extended Length: 22.44"

 

[BuildBreakRepeat]

Here is the difference between the two current offerings from FOX. I think they made a mistake in this listing since the math doesn’t make any sense….

 

[Nick@ApolloOff-Road]

Here is the difference between the two current offerings from FOX. I think they made a mistake in this listing since the math doesn’t make any sense….

The Extended and Compressed measurements are flipped on the Fox site.

 

[BuildBreakRepeat]

The Extended and Compressed measurements are flipped on the Fox site.

Understood, with the same compressed length between the two shocks I’m failing to see a benefit in running the shorter length. Just more travel with the longer shock and no lost up travel.

 

[Nick@ApolloOff-Road]

Understood, with the same compressed length between the two shocks I’m failing to see a benefit in running the shorter length. Just more travel with the longer shock and no lost up travel.

The only thing I could really see is the ride difference in the valving based on shock length at ride height and the intended ride quality at ride height. You may get more shock length, but sacrifice a some ride quality at ride height since it's not in the expected zone. But...I didn't valve the shocks, so I'm just making an educated guess.

 

[The Evil Twin]

Understood, with the same compressed length between the two shocks I’m failing to see a benefit in running the shorter length. Just more travel with the longer shock and no lost up travel.

If If I recall the chart someone else put together, the shorter Fox had an extended length that was shorter than the factory shock. That could mean the shock itself was limiting suspension extension and topping out.

 

[MrFancypants]

Doesn’t make any sense. they increased both compressed and extended length, which means they reduced compression and increased extension. That’s the opposite of what they should have done. Good luck to anyone that orders these new ones if those specs are actually correct.

If anything I would add lower spacers to push the resting ride height to the middle of the stroke. I don’t see why you would want more extension travel than compression travel. Anything less than 3” compression travel would make me nervous.

The HTO stands for hydraulic top
out. The whole point of the design is to absorb top outs, so why increase extension?

 

[AZsurveyor]

I know I will be needing new shocks soon and as much as I want to jump on these, I am afraid they will stiffen up my ride from what I am used to with the 2.0s

I suppose I could always drop back to the 2.0 and sell these on FB but I just hate going through all that hassle.

 

[BuildBreakRepeat]

I know I will be needing new shocks soon and as much as I want to jump on these, I am afraid they will stiffen up my ride from what I am used to with the 2.0s

I suppose I could always drop back to the 2.0 and sell these on FB but I just hate going through all that hassle.

I’m curious how the stiffness compares to other off the shelf shocks. I’d like a set as well but don’t want to make it harsh.

 

[Flash1034]

$360 per shock? Holy Cow. Are they filled with Pure Virgin Nitrogen?

 

[rwillia4]

Here is a previous table I made:

 

[StrokinOut]

Here is a previous table I made:

View attachment 276115

Are those numbers for rear shocks? All the numbers, including overall travel, are much higher than any specs I've seen for front shocks.

 

[MrFancypants]

I know I will be needing new shocks soon and as much as I want to jump on these, I am afraid they will stiffen up my ride from what I am used to with the 2.0s

I suppose I could always drop back to the 2.0 and sell these on FB but I just hate going through all that hassle.

I had the Fox 2.0 RR’s (Accutune) on my previous truck. Granted it was a gasser, but the OE HTOs ride way better in my new truck. Big fat trucks need big fat shocks.

 

[rwillia4]

Are those numbers for rear shocks? All the numbers, including overall travel, are much higher than any specs I've seen for front shocks.

Yes only rear

 

[AZsurveyor]

Here is a previous table I made:

View attachment 276115

Does the "stiffer" characteristic make it extend less? Seems like the pattern I am observing.

 

[MrFancypants]

Does the "stiffer" characteristic make it extend less? Seems like the pattern I am observing.

I always thought stiffness and extension were directly proportional.

 

[Canyon Trekker]

Are those numbers for rear shocks? All the numbers, including overall travel, are much higher than any specs I've seen for front shocks.

The shock in question is for the front which is (now) 987-24-087 that replaces the -000.

Here are the numbers for all of the questionable shocks including the front -000 compared to the OEM Tremor shock and the shock meant for greater than a 1.5" lift.

Specifications of the 987-24-003: (Rear Lift 2-3.5) (Not Tremor recommended)

Body Diameter (in): 2.5
Body Material: Aluminum
Bottom Mount: Eyelet
Compressed Length (in): 19.39
Extended Length (in): 30.58
Reservoir Type: Internal Floating Piston
Series: Performance
Top Mount: Eyelet
Travel (in): 11.19
Type: Smooth Body

Specifications of the 987-24-001: (Rear Lift 0-1.5) (Tremor recommended)

Body Diameter (in): 2.5
Body Material: Aluminum
Bottom Mount: Eyelet
Compressed Length (in): 18.79
Extended Length (in): 29.58
Reservoir Type: Internal Floating Piston
Series: Performance
Top Mount: Eyelet
Travel (in): 10.79
Type: Smooth Body

Specifications of the Stock Tremor as Measured: Rear (22YM)
Body Diameter (in): 2.5
Body Material: Steel
Bottom Mount: Eyelet
Compressed Length (in): 19.00
Extended Length (in): 30.58
Reservoir Type: ***
Series: Ford Spec
Top Mount: Eyelet
Travel (in): 11.58
Type: Ford Spec

Specifications of the 987-24-002: (Front Lift 2-3.5) (Not Tremor recommended)

Body Diameter (in): 2.5
Body Material: Aluminum
Bottom Mount: Eyelet
Compressed Length (in): 15.80
Extended Length (in): 23.99
Reservoir Type: Internal Floating Piston
Series: Performance
Top Mount: Stem
Travel (in): 8.19
Type: Smooth Body

Specifications of the 987-24-000: (Front Lift 0-1.5) (Tremor recommended and replacement shock in question; 987-24-087.)

Body Diameter (in): 2.5
Body Material: Aluminum
Bottom Mount: Eyelet
Compressed Length (in): 14.80 (987-24-087 14.98)
Extended Length (in): 22.19 (987-24-087 22.44)
Reservoir Type: Internal Floating Piston
Series: Performance
Top Mount: Stem
Travel (in): 7.39 (987-24-087 7.46)
Type: Smooth Body

Specifications of the Stock Tremor as Measured: Front (22YM)

Body Diameter (in): 2.5
Body Material: Steel
Bottom Mount: Eyelet
Compressed Length (in): 15.00
Extended Length (in): 22.00
Reservoir Type: ***
Series: Ford Spec
Top Mount: Stem
Travel (in): 7.00
Type: Smooth Body