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Custom tender spring upgrade

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8.4K views 13 replies 8 participants last post by  Dert  
#1 ·
I am looking for different ways to improve the suspension on my 2019 turbo. The main driver for this is to improve comfort of low speed chop & washboard sections in trails here in northern MI. When the trails are not groomed well, the washboard can create pretty violent shaking in the cab and be quite abusive.

The first option i landed on reading online are the RZR AID/ allthings UTV tender spring swap kit. As my factory springs are fully compressed. Seems like good reviews on these and would likely help my problem. However I do not like that there are no crossover rings, and the new tender springs will never actually "bind out". So while it may solve my original problem, I think it will create more body roll & less bottom out performance. It seems like the tender springs alone is really just reducing the overall spring rate between the 2 springs on the shock, creating a softer ride.

The second option I see is something like the shock therapy full spring kit. With ll new springs (upper & lower), as well as cross over rings. Seems like performance wise this is a very good option, but is a bit more pricey than I original wanted to spend.

A third option I am thinking about is buying the RZR Aid tender springs, but also buying separate crossover rings and add them in. My question is has anyone done something like this? or have and thoughts on it? You could do this set up for less than half the price of the full shock therapy setup.

I understand that this may not quite meet the performance of a full spring setup or shock tune. But as for a budget solution I am thinking it may work out very well? Considering that there are many good reviews on the tender springs alone, I figure adding separate crossover rings would only help and make it fully tune-able and a true dual rate set up. Thoughts?

$240 for the springs & $100 for (4) cross over rings from Eibach.

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#2 ·
I am in a similar position. I’d love the ST full kit, but I also need tires soon so I’m not ready to drop the $850. I actually just ordered the rear RZR Aid tenders for my XP1K today. If they impress me enough I’ll do the fronts as well, but that will require 4 new springs and spacers because my ‘18 came with single, dual rate springs in front. I don’t think the body roll will be an issue, at least in the rear with the sway bar. I think your turbo has a sway bar in front too, no?
 
#5 ·
Awesome, glad to see I'm not the only one who thought of this.

So you are happy with the set up overall?

How did it affect your ground clearance? I'm looking to remain at close to factory ride height where mine is now. I don't want it jacked up bunch.

Also, if you don't mind and have time, would you consider sending me rough measurements for the location of both your cross over rings as well as the pre-load adjuster, front & rear?

If I do this, it would help to have a rough idea as to where to start with the adjustments.

Appreciate it!
 
#6 · (Edited)
I am super happy with. I do plan to have the suspension done in the future (springs & valving), but this was an awesome upgrade until then. This set up doesn't change the height or anything like that, you will have full adjustability.

Will do, but those settings will vary. Mine is a 19 xpt4, and I have it set to about 14½ ground clearance front and back when loaded. I also have the x-overs set pretty late, giving me a bit of xtra plush, I don't push very hard because my cargo is precious (wife, 5yo, 10yo)... There's plenty of room for adjustment.

I will get out there and measure mine in a bit.

Also to add, the x overs are super easy and quick to adjust after they're on the rzr. Only takes a few minutes.

Edit: forgot to mention that the front sway bar came off my rzr after the first mile I put on it... that helped smooth the front a bit at the cost of a little sway. But this suites me better. Ymmv


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#10 ·
I also have a 2019 turbo 2 seat and just installed the RZRAid tinders (4). I didnt want to invest the big $ on springs and didnt like the coil bind, however i don't get the point of aiding crossover rings to a non true dual rate setup (as the collar is fixed) The rings will limit spring compression, however a fast moving / hard hit will effectively slam the spring into the collar which cant be a good thing --- so what is the functional purpose of them. Am I missing something? Just asking.....
 
#11 ·
The addition of the crossover rings is what makes it a true dual rate setup.

You set the rings so that the softer tender springs are only being used for the first bit of travel.

Then on harder hits, the black spring sleeve bottoms out against the crossover ring, eliminating the upper tender spring from the equation. This transfers all of the action to the lower & stiffer spring.

Giving a softer plush ride and suspension action over slow speed chop & rough terrain, but also retaining bottom out resistance on jumps, large bumps, roll stability, G-outs,etc. The black sleeve which divides the upper & lower springs is what contacts the crossover ring. not the spring itself. This is just the way a dual rate suspension works as far as i understand, and is the way aftermarket spring upgrade kits are supplied. Such as spring therapy, Eibach, etc. Can Am X3's also come this way from the factory.

If you have no cross over ring, then by adding tender springs alone you are effectively just lowering the overall spring rate of the system (between the 2 springs). This gives a softer/plusher ride, but sacrifices bottom out resistance and other things, as well is not a dual rate setup.
 
#12 ·
For what it's worth, I have the RZRaid tenders and don't have crossover rings, and don't see a need for them. These are pretty stiff tender springs so when combined with the stock main spring, puts it where it should be in my opinion. I run pretty hard in the desert and I haven't noticed a need for a crossover. I don't bottom out easily and get a pretty good ride. It is not overly soft by any stretch. I think people are too caught up in being able to say they have a "true dual rate setup" when they probably don't need it.

Now with an aftermarket spring setup with a longer/lighter top spring, I understand the point of the crossover. But with these add on tenders, It's not necessary and just wasted money. If you're going to buy new tenders and spend another couple hundred on crossover rings, you might as well just get a full spring kit.