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Bilstein 6112 "review"/thoughts.

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17K views 23 replies 8 participants last post by  PaleRider  
#1 ·
Okay, I'm 10 days in on the 6112 install, ready to speak on some observations.

Full suspension change consists of:
Bilstein 6112 front struts, the extended travel model (newly released)
Bilstein 5160 rears
Bilstein B8 control arms.

I have the fronts set at their lowest height option, which is listed as 1.85" over stock. The new model of the 6112 requires the use of a UCA. As reported to me by bilstein, the bushings and balljoint in their arm are moogs.

All in all, i'm very happy with them. They are SHOCKINGLY heavy, like I struggled to lift the box they came in haha.

Ride quality - Very firm. They are compliant, but they are resistant to completing a full cycle for normal road duty, even in my areas dakar-esque roads, i have yet to note a bottom out. They are as controlled as they are as firm. There is no harshness or jittery-ness like you'd feel in a 2500, but it does have a VERY heavy/planted feel like you get in a 2500. They are ready for anything anyone would throw at them in a 1/2 pickup.

Large road bumps and dips are soaked up without much feeling and without any hint of reduced control. In the dirt, wow, impressive. You barely feel a thing.

I have a short bed crew cab, so, wheelbase is definitely lacking. I have determined the one area where they "fall short" of expectation is a true evenly spaced washboard road. While it keeps total control, you note a bounce between the front and rear dampers doing their thing.

The package on the whole did a number for firming up my steering which I view as a benefit. Hopefully a little more front end work will get the steering resistance where I like it.

On sections of missing pavement, or small diameter deep potholes where the pothole walls are at a steep angle to the road, or poorly aged railroad crossings, you 100% feel the hit, but nothing after the initial hit. No loss of control. no side stepping. It just keeps moving.

For those looking for a "plush" ride, these ain't it chief. For someone wanting a controlled and as capable but firmer ride, these may fit the bill. If you like tight handling but want max travel, these are an excellent choice. The behave much differently than a 5100 IMO. Far smoother and less initial firmness than the 5100. Then when you get into a compressive phase, the shaft moves way more than a 5100. Time will tell if they were worth the expense, but my immediate impression is, this is a wicked nice kit, but not suited for everyone.
 
#2 ·
Did something dumb, ended up driving off of a road grade change, about 10", which I thought was like an inch and ramped. It was not ramped, but actually more likeA right angle. I took it on forward with a slight left hand offset.

On stock suspension, you'd have pulled over to make sure you didn't bend or break anything. I legit felt almost nothing. These bad boys are made for big hits it would seem
 
#7 ·
Just the normal ones, non lifted variant. (0-2" lift).


I will likely swap them at some point. An odd fit on the stamped LCA. it works though
 
#8 ·
Thanks for the quick reply! Which would you swap with? The website makes it appears as if those will only work on 1500hd or up to 2006 1500 non HD. Do you think the difference in feel is because of the new style links, or just because the stock ones were worn out?

Have you experimented with either of the other height settings up to 2.75"? I have the previous gen 6112s maxed out at 1.85" and I’m considering upgrading to get the extended travel from the new version.
 
#9 ·
Yeah it wasn't entirely clear whether they would work or not, but they did fit right in no problem. The foot of the clevis is really designed to sit on the flat of a cast arm, but it does indeed work on the K2 trucks. I think the feel is really just because they are a little longer, and therefor aren't pre-loading the sway bar as much. That said, I did get a poly set as well to swap in and see what changes, if anything. At days end, its just a sway bar link and relatively unimportant in the grand scheme.

I have not, my goal is max travel/articulation. So I got the extended variant and intentionally chose the lowest setting, paired with a UCA. My goal was a mid-travel build. Going up to max would have kept the total travel on the front too close to stock to make it worth the money. For me, we all do things a little differently. My next move is to replace them with the new DK coilovers next year.

I should mention, I recently added some heavy 33 tires and wheels with a wider offset. It has really tamed down almost all of the "firmness" of the ride, it's pretty kickass.
 
#15 ·
Since you mentioned mid travel, did you cut the bump stop under the UCA? I have seen people do that but wasn't sure if that was done on yours. Since we have talked about your build and my plans for my truck, your build is goin in my notes as a checklist for mine. So far the only thing I have done with my truck is is get a new bumper (thanks to a someone backing into the front of my truck, their insurance took responsibility and I just got paid out!!) This year I am telling myself will be the year that I get down to business and work on the suspension haha. Thankfully my wife is supportive to me investing in the truck! hope all is well and Happy New Year.
 
#10 ·
10 month update.

Overall, I am extremely pleased with this kit.

The front end has softened up a significant amount to where I really otherwise feel very little input transmitted from the front wheels on virtually any type of paved surface, rough or otherwise. Off pavement, it honestly feels like glass. It's a little disconcerting TBH, almost like driving a 911 at 100 and thinking you are only going 50, I was going 85 down a dead end deserted (safe) dirt road with lots of dips/blips/whoops etc and the lack of drama or chaos was too confidence inspiring. I think the part of these I like best is their on-road handling as in regard to sporty/aggressive driving (my baseline), these things really encourage you to take banks hard and fast, and once the weight transfers and the outboard shock plants in, it feels really stable and can switch directions pretty dang well.

I still plan to swap these out to the DirtKing kit at some point, but until then I really do think I made the right call on a needs based level.

I am a little less thrilled with the rears within the same time. The 6112 and the 5160 are not really a match, granted I do not have my springs in yet, but I assume this is mainly due to the stock rear end with +1" blocks just being far less able than the front is this point.

I am still fighting a little bit of "looseness" when the truck is travelling straight, I am waiting til I do the rears to evaluate this as it does feel like it is all in the rear springs/geometry.

One thing I did not consider at all when deciding on what to get for the suspension was the effects a larger shock body have in regard to coming up to operating temperature. In the winter, these things need a solid 5-10 minutes of driving before they feel "right". Prior to that, it feels like a 2500 when its cold. I was really surprised by this even though I previously went through the same things on my mk6 stg 2 tdi golf when I used gas charges coilovers on it, and it needed different settings summmer/winter.
 
#11 ·
One thing I did not consider at all when deciding on what to get for the suspension was the effects a larger shock body have in regard to coming up to operating temperature. In the winter, these things need a solid 5-10 minutes of driving before they feel "right". Prior to that, it feels like a 2500 when its cold. I was really surprised by this even though I previously went through the same things on my mk6 stg 2 tdi golf when I used gas charges coilovers on it, and it needed different settings summmer/winter.

King has low-temp shock oil for precisely this…maybe Bilstein does also?
 
#13 ·
I have a 2019 Chevy Silverado 1500 Trailboss LT; trying to swap out Ranchos for Bilstein 6112s in the front; however, I ran into a little problem. Does anyone have info as to which bolts are to be used on the bottom part of the strut which is slightly different (no bracket on the bilstein unlike the rancho) ? The bracket from rancho shock will not fit the Bilstein because it does not have the groove that enables the bracket to clamp on like it does on the Rancho.

Will appreciate any feedback.
 
#19 ·
Hey man, I finally bit the bullet and got the 6112's and 5160's b8's and devers. Quick question for you. I'm not really looking to spend 50-60$ on Legit Prothane grease for my UCA's, however if that's the best option I will. Just curious if you remember using any other specific grease that worked well with the B8 UCA. I've seen some people recommend superlube, or energy suspension (not in grease gun tube ) I would like to find something local so I don't have to wait for shipping but again that's why I am asking for your advice/opinion. Thank you
 
#20 ·
This is an excellent question.

I just used lucas red and tacky grease. I was not aware prothane grease was special, lol.

My bushings ended up exhibiting some play about a year in. It may have been due to crappy alignment where someone overtightened a cam and deformed the frame ear where the UCA attaches, or maybe the wrong grease?