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Old 06-19-2020, 12:14 PM #1
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Dobinson springs and 5100s vs Dobinson springs and shocks

If you are running Dobinson springs with Bilstein 5100s, how do you like the setup? Do you wish you would have gone with the complete Dobinson springs and shock setup?

Also what was your reason for going Dobinson/5100s over the Dobinson setup?

My 4runner is mainly used for daily driving, hauling motorcycles to the track, and bikes to trails. Eventually want to get it offroad on some trails.
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Old 06-19-2020, 12:37 PM #2
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also interested in dobinson spring/bilstein 5100 feedback
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Old 06-19-2020, 01:08 PM #3
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I have Bilstein 5100s front and rear with Dobinsons 302/505 (2.5/1.5") springs.

The front Bilsteins are set at the very bottom clip setting as the lift is coming from the spring.

My reason for going with the Bilsteins was simply the popularity of them, and got the front and rears for $372: Bilstein 5100 Complete Set | 5th Gen 4Runner | FJ

Also, the 5100s are Monotube, and the Dobinsons are twin tube. Didn't know much about the differences but someone here posted this article: The Difference Between Twin-Tube and Monotube Shocks - Strutmasters.

The Bilstein 5100s apparently corrode pretty easily (see someone elses pic here: https://www.toyota-4runner.org/attac...193333_725-jpg

so I sprayed them with a few coats of clear before installing















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Old 06-19-2020, 03:43 PM #4
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I'm running an all Dobinsons set up and have been pleased. Haven't had any issues with where I take my 4runner. Has handled ruts and corrugated roads without overheating (40-50mph over them).

Other than differences in shock type (Twin vs. Monotube), they are also valved differently with Bilstein being digressive and Dobinsons being progressive. A factor that may affect your choice.



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Old 06-22-2020, 12:12 AM #5
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Quote:
Originally Posted by pDubs View Post
I have Bilstein 5100s front and rear with Dobinsons 302/505 (2.5/1.5") springs.

The front Bilsteins are set at the very bottom clip setting as the lift is coming from the spring.

My reason for going with the Bilsteins was simply the popularity of them, and got the front and rears for $372: Bilstein 5100 Complete Set | 5th Gen 4Runner | FJ

Also, the 5100s are Monotube, and the Dobinsons are twin tube. Didn't know much about the differences but someone here posted this article: The Difference Between Twin-Tube and Monotube Shocks - Strutmasters.

The Bilstein 5100s apparently corrode pretty easily (see someone elses pic here: https://www.toyota-4runner.org/attac...193333_725-jpg

so I sprayed them with a few coats of clear before installing
Are you happy with the setup? Do you wish you would have gone all dobinson?
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Old 06-22-2020, 12:41 PM #6
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Quote:
Originally Posted by jpratt847 View Post
Are you happy with the setup? Do you wish you would have gone all dobinson?
I am very happy with the setup. Big upgrade from stock suspension I had been running. I am sure I would have been happy either way though. Lots of folks run the Dobinsons and like them as well.
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Old 06-22-2020, 03:17 PM #7
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Quote:
Originally Posted by jpratt847 View Post
Are you happy with the setup? Do you wish you would have gone all dobinson?
I'm sure the 5100's are a great setup, but I saw this post today - granted I don't think you're looking at jumping up to the IMS shocks, so not quite an apple to apples comparison.

https://www.toyota-4runner.org/3507320-post2334.html
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Old 07-03-2020, 03:14 PM #8
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Quote:
Originally Posted by Sundy View Post
I'm sure the 5100's are a great setup, but I saw this post today - granted I don't think you're looking at jumping up to the IMS shocks, so not quite an apple to apples comparison.

https://www.toyota-4runner.org/3507320-post2334.html

The IMS looks good. But more than what I will need. And the cost
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Old 07-04-2020, 03:30 PM #9
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I purchased the dobinson ims setup, and extremely happy with it. GF has icon stage 2 on hers and has a more plush ride, but I went for the medium firmness.
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Old 07-04-2020, 04:23 PM #10
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I have a full Dobinson set up with UCAs ... I’m happy with my set up. Rides comfortably... I haven’t taken it off-road yet.
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Old 07-06-2020, 02:00 PM #11
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>If you are running Dobinson springs with Bilstein 5100s, how do you like the setup?

Just installed and so far so good. Ride seems similar to stock suspension comfortwise but less brake dive. I have not noticed the 5100 harshness that people have mentioned. I do drive performace cars too so might judgement might be skewed/

>Do you wish you would have gone with the complete Dobinson springs and shock setup?

Only regret of not going complete dobinson is I was going to buy the front strut preinstalled by them. I could not find a proper spring compressor so ended up taking it in instead of doing it myself.

>Also what was your reason for going Dobinson/5100s over the Dobinson setup?

Guess the twin-tube info go into my head, didn't feel like paying more for dobinsons for supposedly inferior shocks,.
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Old 07-06-2020, 04:08 PM #12
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Quote:
Originally Posted by Jeff_DML View Post
>Guess the twin-tube info go into my head, didn't feel like paying more for dobinsons for supposedly inferior shocks,.
New to the suspension game, but can you please elaborate on what you mean? Is monotube preferred over the twin? a lot of the suspensions im looking at all seem to be twin (ironman, dobinson).

Thanks!
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Old 07-06-2020, 04:09 PM #13
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Quote:
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New to the suspension game, but can you please elaborate on what you mean? Is monotube preferred over the twin? a lot of the suspensions im looking at all seem to be twin (ironman, dobinson).

Thanks!
see pDubs post above, he posted a link about it. Pretty sure that is the same thing I saw

https://www.toyota-4runner.org/3506582-post3.html
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Old 07-06-2020, 04:37 PM #14
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Quote:
Originally Posted by FishNerd View Post
New to the suspension game, but can you please elaborate on what you mean? Is monotube preferred over the twin? a lot of the suspensions im looking at all seem to be twin (ironman, dobinson).

Thanks!
On paper, the monotubes will offer better cooling and dampening as the piston will be larger and have more oil in a monotube. That being said, I have never had an issue with heat on my twin tubes after a long corrugated washboard road trip like the route to Racetrack La playa in death valley. Was able to sustain 50-55mph on it.

If you're just doing low to medium speed offroading, you should have no issues with twintubes. One benefit of them is the the rod/shaft doesnt get beat up as bad as a monotube. However, you could mitigate that issue with a monotube by using a boot.

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Old 11-06-2020, 03:17 AM #15
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Quote:
Originally Posted by pDubs View Post
I have Bilstein 5100s front and rear with Dobinsons 302/505 (2.5/1.5") springs.

The front Bilsteins are set at the very bottom clip setting as the lift is coming from the spring.

My reason for going with the Bilsteins was simply the popularity of them, and got the front and rears for $372: Bilstein 5100 Complete Set | 5th Gen 4Runner | FJ

Also, the 5100s are Monotube, and the Dobinsons are twin tube. Didn't know much about the differences but someone here posted this article: The Difference Between Twin-Tube and Monotube Shocks - Strutmasters.

The Bilstein 5100s apparently corrode pretty easily (see someone elses pic here: https://www.toyota-4runner.org/attac...193333_725-jpg

so I sprayed them with a few coats of clear before installing
















I’m looking to get this same set up. Do you have any photos of the truck from the side? Does it sit pretty level or is there any rake? How about with a a full trunk any sag?
Thanks In advance!
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