Eibach 2.0 pro truck coilovers

[jred]

https://eibach.com/us/2282/E86-23-032-01-20-GMC-Sierra-1500-pro-truck-coilover

 

 

Anyone use these on a 14-18?  I searched and haven’t found a lot of info for these year models.  I found these while searching for an alternative to waiting for bilstein 6112s.  Seems nobody knows when the 6112s will be back in stock.  I know they make quality stuff, I think the 6112 springs are from them actually, but just wondering if anyone has first hand experience.  

I also looked at fox 2.0 but I like that the eibachs can actually be adjusted on truck.  Steel bodied vs aluminum body.  I also think the shocks themselves are valved different?  Digressive vs linear?  What does this mean ride wise?

 

 

[lucas287]

Buy once, cry once. I've asked myself these questions and spent a long time pondering the best setup. I've got some professional goals this year and if I hit them, my wife agreed to buy me a set of Thuren's custom King 2.5s

 

Digressive will have more low speed force and then it bleeds off quickly as shaft speed increases. Small bumps, cracks, road reflectors - you will feel all of this because of that damping force. 

 

Linear is just like sounds. At low shaft speeds the force is low and increases linearly with speed. These, along with progressive, are widely considered to be the most "plush" on the street. 

 

There is a tradeoff between handling though, with digressive usually providing that sports car feel. That's where larger pistons come in, like King 2.5s. They might be valved pretty loose down low, but there's so much piston surface area that they still provide good handling characteristics. 

[jred]

Thanks, that makes sense.  I may just wait for the 6112.  A bit more reading leads me to believe they might be the best option for me.  It seems they maybe take advantage of the larger shock body and it’s increased damping ability and pair it with a bit lighter, more linear spring to provide a balanced on road ride and decent off road ability.  I just can’t see myself taking the next step to a midrange full custom setup, especially given its age and mileage.  One thing is for sure, the stock shocks are way past done and whatever I chose will undoubtedly be an improvement.

[lucas287]

Something you might consider is the kit that's purposed for the Tahoe....it uses a 600 lb spring vs a 750 lb spring. I called Bilstein some time back and got that information. Even with CCSB 4x4 I wouldn't hesitate using 600 lb springs. I would just mount them on the first perch and use a lower spacer to get the desired lift. 

 

Or if you do use the truck kit, you probably wouldn't have much downside to removing your sway bar. Again, digressive plus piston area plus spring rate...all of that will help with handling potentially making the sway bar "unneccessary". 

[jred]

That’s good info as well.  I do have a lower spacer installed now, along with the accompanying rear block.  I was hoping to match up the stance pretty close to current to avoid having to change out the rear block.  The lighter spring def might help smooth out the ride some.  Your saying use the block and stock height slot to avoid preloading the lighter spring, did I understand that right?

 

 I know our 2015 2wd LTZ suburban rides good on hwy.  But the magnetic ride isn’t really a fair or appropriate comparison.  But i assume it prob has the lighter springs.

[lucas287]

48 minutes ago, jred said:

The lighter spring def might help smooth out the ride some.  Your saying use the block and stock height slot to avoid preloading the lighter spring, did I understand that right?

 

 I know our 2015 2wd LTZ suburban rides good on hwy.  But the magnetic ride isn’t really a fair or appropriate comparison.  But i assume it prob has the lighter springs.

To do it right, you'd need to know the stroke length of the 6112 shock and what spring perch gets you, under load, at 50% travel. For example, if it's a 4" stroke, and the lowest perch (stock height) puts you at 65/35 (rebound/compression) then more preload should be used to get it closer to 50/50. The only way to figure that out is by trail and error. 

 

Of course, though, even if you got it preloaded perfectly you would throw things off a bit with the lower spacer. 

 

If I recall my conversation with Bilstein, they said that "most 6112 users" have added front end accessories like winches, bumpers, light bars, bigger wheels/tires, so they still use a heavy spring. That's why I, personally, lean towards a lighter spring because I don't any of that lol. 

 

Also, food for thought, the Fox 2.0 kit, the one that works on any 07-18 Tahoe, Suburban, Truck, etc.... guess what spring rate it uses? 600 lb.  

[lucas287]

I've got an email out to Bilstein to see what the stroke length is!

[jred]

I emailed eibach to see what their spring rates are on the 2.0 kits.  Yukon vs Sierra etc.

[lucas287]

54 minutes ago, jred said:

I emailed eibach to see what their spring rates are on the 2.0 kits.  Yukon vs Sierra etc.

Doesn't look like they make one for Tahoe/Yukons. Eibach is digressive monotube too. Except with a better, more traditional coilover design. In fact, I'd bet you could easily swap a different spring onto Eibach's setup!

[lucas287]

The Tahoe/Yukon 6112s have 100mm of stroke, so basically 4 inches. 

 

Stock has 3.22" looks like. 

Edited April 20, 2021 by lucas287

[lucas287]

@jred these should be a contender too!

 

https://www.halolifts.com/HaloLifts-Boss-Aluma-20-Coilovers-GMChevy-fit-2007-2021_p_346.html

 

Halo has partnered with Elka. Looks like very good quality from the bit of research I've done on Elka. Just called Elka (Canadian company) and Frenchy answered haha - they use progressive valving. Makes sense considering this language from their website: "Strong ramping effect for extra bottom-out protection over large dips and washes". 

 

700 lb spring and it looks like it has a lot of travel! I'll get with Halo to find that out. But at $900 that would probably be my choice over Eibach.