Tremor Rear Shock Options

[Captain]

That sucks, looks like I need to return mine when they get here tomorrow.

Hey, when you return them that gives you $400 off the King 2.5 w/reservoirs!!

 

[Texican]

Hey, when you return them that gives you $400 off the King 2.5 w/reservoirs!!

I'm saving money!

 

[Yeti]

Update, despite BDS website saying otherwise, the 4" Fox/BDS 2.0s have a compressed length of 18.95" on the box and via measurement.

This is too close for comfort as max rear articulation is:
24.125" ride height shock length
29.125" shock length at static max articulation
-5" difference so 19.1" static compressed and stock fully compressed is 18.1". BDS is 18.95" Add in some dynamic loading and/or bump stop compression...

Yeah, that sucks. I don't mind being a little shorter uncompressed but longer compressed would be a deal breaker.

 

[Yeti]

Hold on. Are there internal bumpstops in those shocks? @Captain

 

[Captain]

Hold on. Are there internal bumpstops in those shocks?

There is a small external bumpstop which I factored out of fully compressed since its fairly soft. If factoring it in, add another 3/4" to compressed length. For extension, yes, there is an internal bumpstop according to BDS.

 

[Yeti]

There is a small external bumpstop which I factored out of fully compressed since its fairly soft. If factoring it in, add another 3/4" to compressed length. For extension, yes, there is an internal bumpstop according to BDS.

Ooch

 

[F150nutjob]

So having read this thread several times lol I'm safe going with Bilstein 5100s on my stock Tremor?
Though I admit to being very interested in the slightly firmer Eibachs Yeti mentioned

Thanks for all the feedback in here.

 

[PaulBlartMallCrawler]

The Eibachs are amazing. It’s like exorcising a demonic speed boat ghost that’s possessed your rear axel

 

[captain lead foot]

The Eibachs are amazing. It’s like exorcising a demonic speed boat ghost that’s possessed your rear axel

Hell of a sales pitch.

 

[Captain]

I ain't a quiter @Texican, under extreme static articulation the compressed shock was 19" with 1/2" gap remaining to bumpstop. Would stop engage with shock at longer length with axle close to level? There was a 1.75" gap to top of wheel well.

 

[Texican]

I ain't a quiter @Texican, under extreme static articulation the compressed shock was 19" with 1/2" gap remaining to bumpstop. Would stop engage with shock at shorter length with axle close to level? There was a 1.75" gap to top of wheel well.View attachment 4208
View attachment 4209
View attachment 4210

Great info. I may use them until something better comes out. I'm not planning any major excursions until the fall. I have to do some pondering.

 

[Captain]

Rear Shock Measurements

Stock
30.5" Extended (Tremor @static max articulation=29.5")
18.1" Compressed

Eibach Pro Sport (E60-35-035-02-01)
29.5"
?

RC Vertex 2.5 (699012)
30.04"
17.6"

Fox/BDS 2.25 (98224828)
31"
18.95"

Fox 2.5 Performance Elite (88426025) *4-6" lift version
31.9"
19.2"

Fox 2.5 Performance Elite (883-26-122)
28.4"
17.4"

Icon 2.0 (96518)
28.5"
17.2"

Bilstein 5160 (25-261400)
29.44"
17.52"

Bilstein 5100 (33-318967)
29.7"
17.9"

Elka 2.5 (90179)
29.7"
18.94"

Elka 2.5 w/reservoir (90035)
29.7"
17.8"

King 2.5 (25001-356)
28.5"
17.88"

Stock Bumpstops
4.5" total length
1.5" exposed rubber stop
3.25" diameter
Stop contacted axle with passenger rear shock compressed to 18.5" length.

 

[F150nutjob]

Rear Shock Measurements

Stock
30.5" Extended (Tremor @static max articulation=29.5")
18.1" Compressed

Eibach Pro Sport (E60-35-035-02-01)
29.5"
?

Fox/BDS 2.5 (98224828)
31"
18.95"

Icon 2.0 (96518)
28.5"
17.2"

Bilstein 5160 (25-261400)
29.44"
17.52"

King 2.5 (25001-356)
28.5"
17.88"

Stock Bumpstops
4.5" total length
1.5" exposed rubber stop
3.25" diameter
Contact axle with passenger rear shock compressed to 18.5" length.

Thanks for the summary, super helpful

 

[metallikatz3]

Thanks for putting all that together! I'm still hoping that Icon comes out with a 2.5" shock specific for lifted/Tremor applications.

 

[Charky]

OK, a little help please for one of the more simple minded forum members.

First of all, @Captain, thanks for compiling the list of rear shock measurements!

Are the shocks you and @Yeti were talking about and the ones in your pictures the BDS/Fox 2.0 98224828? (Your list mentions 2.5 and this may or may not be a typo.) Although the measurements of these are pretty close to stock, are you guys saying they may not work due to a bump stop issue? Specifically, will the shock reach full compression before the truck hits its bump stop? Will increasing the height of the truck's bump stop alleviate this issue or is it better to move on to another shock?

Apologize for all the questions, I'm a crayon and construction paper kind of guy .

 

[Captain]

@Charky humble though you may be , you're exactly right, we're worried the fox/bds could reach full compression before bumpstop engages. As you say, a bumpstop spacer 0.5 to 0.75" could absolutely solve this issue. If using an aftermarket progressive bumpstop you might want a larger spacer to account for the extra "squish" vs stock stop. Everyone will have to be their own judge as to whether $400 + $50-100 spacer and/bumpstop is worth it.

*2.5 was a typo, but the body is larger than other as it's actually 2.25" diameter and visibly more substantial than Icon 2.0s I laid hands on.

 

[Texican]

@Charky humble though you may be , you're exactly right, we're worried the fox/bds could reach full compression before bumpstop engages. As you say, a bumpstop spacer 0.5 to 0.75" could absolutely solve this issue. If using an aftermarket progressive bumpstop you might want a larger spacer to account for the extra "squish" vs stock stop. Everyone will have to be their own judge as to whether $400 + $50-100 spacer and/bumpstop is worth it.

*2.5 was a typo, but the body is larger than other as it's actually 2.25" diameter and visibly more substantial than Icon 2.0s I laid hands on.

Would a set of Timbrens with a 1" spacer work if I decided to keep the Fox?

 

[Captain]

Would a set of Timbrens with a 1" spacer work if I decided to keep the Fox?

Maybe, Timbren SES are 7" tall so that seems more than enough even without a spacer. SES are for load leveling and will not be optimal for offroading if that matters. Im leaning towards a spacer for now (I have some black 5/8 uhmw polyethylene sheet in basement), but will probably also experiment with a universal progressive bumpstop and report back.

 

[Texican]

Maybe, Timbren SES are 7" tall so that seems more than enough even without a spacer. SES are for load leveling and will not be optimal for offroading if that matters. Im leaning towards a spacer for now (I have some black 5/8 uhmw polyethylene sheet in basement), but will probably also experiment with a universal progressive bumpstop and report back.

Didn't even think about making a space myself. I have some uhmw at work. Thanks for the idea.

 

[Yeti]

May as well add the vertex 2.5" since they seem to be the best fit, so far.

• Extended Length: 30.04in
• Collapsed Length: 17.60in