Got extended shackles? What are other advantages/disadvantages?

Hello everyone. Just completed 6” ProComp stage-2 lift. Everything is great except I am 1” lower than that preferred level stance in the rear after almost 1000 Miles. Pretty sure the front coil- overs have finished settling in and now I want to bring up the backend a tick. 3” extended coach-builder Shackles is one option I’m considering. However, what’s the downside to this mod? Handling? Comfort? Towing or Bed capacity? Any users out there that can shed some light on this b4 I pull the trigger?

 

No negatives that i have found so far. They are more robust and use a poly bushing instead of rubber so you get a better ride. No loss in payload or towing. Go for it!

 

Thank you for promo reply.

 

That’s all I needed to hear. Install looks pretty easy too. Thanks for the quick feedback.

 

if you installed the lift they will be easy. ride does improve due to not having the rubber bushing binding up and the poly one that lets the suspension work

 

Are you running blocks in the back now?

 

I didn't think CB made a shackle that increased ride height by 3"?

 

+3” increases height by 1.75”.

 

I thought without proper leaf pack the ride was not so great. Anyone had issues ?

 

I know, was just making sure I didn’t misunderstand the OP. Never heard the CB +3 shackles referred to as 3” shackles, just as +3’s.

 

Yep. Using AAL & 3” blocks that came w/lift kit.

 

They don’t. I should’ve referred to them or described them as +3. Stepping back on this topic the “+3” description makes me curious. What does +3 actually describe, is it a deminsion, a degree, a robustness gauge? Dunno?

 

Yeah, that's not a good way for CB to label their shackles, it's pretty confusing. My guess is it's 3" longer than the stock shackles? Maybe? Anyways, another negative of the CB shackles is fitting a spare tire under the bed.

 

Thanks for the feedback, We def don't want anyone getting confused with sizing, Ill include all sizes at the bottom of my post. We've used the same sizing method since 2009 and feel its easier to understand, we also include actual lift amounts with all sizes rather than machine multiple holes calling them adjustable and loosing strength. You're still able to fit a full sized spare up to 35" with any of our Coachbuilder shackles. The spare tire winch holds the tire off to the driver side and will just need to center the tire when raising back up into place. The amount of strength our shackles provide is worth centering the spare by hand

** Lift amounts are when used with a factory Tundra leaf spring **
+1" Coachbuilder Shackles provide .625" of total lift.
+2" Coachbuilder Shackles provide 1.25" of total lift.
+3" Coachbuilder Shackles provide 1.75" of total lift.

 

You're right on, Our +3"s are 3" longer than factory. 7" from bolt center to bolt center. With the arch and location of the front spring hangers we don't want to use anything larger than our +3"s for the factory leafs. This would not allow the leafs to cycle completely, We have built +4"s in the past for larger Atlas leafs.

 

how about Deaver K37s and KING rear shocks. which size do you recommend ?

 

The K37s are a very soft leaf pack, Softer than your factory leafs. The leafs provide about .750" of additional lift but will loose it after they settle. We normally use a set of our +2" Coachbuilder shackles (1.25" of lift) for trucks running less than 3" up front and our +3"s for guys a touch over 3" up front or who prefer a small amount of rear rake. How are you using your truck and how much rear lift are you wanting?

 

I have the Hellwig 7692 sway bar and airbags on 17 SR5. I would like to raise the front 2.5" or so with bilstein 5100. I would like the truck level or a slight rake. What would you recommend as for as shims / shackels? Will your shackles work with the bags and sway bar?

 

If they increase by 3” I’m gonna put some in the front AND back

 

Using different items together can be a headache especially with the Tundra, Dakar Leafs are longer than the OE leafs and require at least a +1" Shackle in order to clear the frame rails when loaded heavy. Deavers need at least a 1.50" shackle because of the rear eyelets diameter and spring rate of there leafs. Reason they use the TC shackles.
The Alcans use a progressive design keeping the leafs overall length restricted and Atlas has reduced the rear eyelet diameter in order to clear the frame rails. We designed our Coachbuilder parts specifically to be compatible with all other brands. I agree with you on blocks, They add just enough leverage to increase axle wrap, even a 1" block you'll feel the difference.

 

Your sway bar end links are adjustable and will def work for your application. We just want the returns of the sway bar to sit parallel to the frame with the truck on the ground. Your air bags will work with our +1"s and +2" Shackles but will need our Air bag spacer kit when using our +3"s (The bag can only reach so far before needing to be extended) Depending on the type of driving you're doing you can set the 5100s on the top setting and use one of our shims above the driver side assembly. This will correct the driver side lean and provide a level side to side stance at 2.5" up front. If you prefer a softer ride you can set them at the middle setting and use 2 shims per side, our front bump stop extension kit would also be needed for the setup. For a level looking stance you'd use our +2"s for this application. your truck will look level but will measure .750"-1" higher in the rear.

 

Not much testing needs to be done to know when removing material you loose strength. If the stress or load is controlled to only one direction you can design the part strong and add speed holes in order to loose weight. But with the load being 360 degrees on the rear pivot its a fact that by adding holes for adjustment you're loosing strength. Ive attached a few pics, there is not only a strength difference but functionality difference in the material and finish. hope the helps.

 

Ditto ^^^^. The ToyTecs are so beefy..the shackles ever failing is the last thing on my mind. Zombie Apocalypse will happen first.

 

Old thread. Just came to say....

@Coachbuilder1 if you want to point out that adding adjustment holes decreases strength, then you’ll have to admit using aluminum instead of steel is going to decrease strength. Posting side by side pictures claiming your shackles are much “beefier” is disingenuous.

Yours are aluminum. Toytecs are steel.

 

Both Coachbuilder and Toytec contain 0% beef and no beef byproducts. So neither are beefy.

And holy old thread Batman.