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2020 KRX
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Discussion Starter · #1 ·
So I got bored and decided to install my spring kit this past weekend. (I was going to wait until I had my front end rebuilt, but who knows when that’s gonna happen)

The spring compressor I bought off eBay worked like a charm to make the install a breeze, with one minor glitch. After setting the preload on the front shocks to 3”, the clamp on the compressor would not fit the Shock properly to be able to close. Simple work around was to remove the hinge collar, and ratchet strap it to the back part of the clamp. Worked great, as you don’t need a lot of pressure to compact the spring. (Honestly, you could install the new springs with just ratchet straps.)
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So a few things that I noticed right away. The front springs are much longer then the factory ones. Especially the “soft” top spring.
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As well as being longer, they are a much heavier spring.
I followed ST recommendations for 3” on the preload, and 8-1/4” on the crossover rings. When the front was done, I ended up being too high (ride height needs to be 15”) as I came in at 16 1/2”. So I needed to remove the shocks and adjust the settings. Now it sits perfect. (Fully loaded)

The rears on the other hand, were shorter then the factory ones, but way beefier.
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ST gives you a new divider and spring perch to use on the rears. The divider is narrower on the main spring side, because they went with a tighter wrap on the coils. And the perch is taller to make up for the shorter spring.

Again, I followed ST recommended settings on the rear at 6 1/2” for preload, and 10 3/4” on the crossover rings. When done, I ended up at 13” (fully loaded) with those settings, and needed to be at 14 1/2” ride height. So off they came, and did the adjustments. Now it sits perfect.

The crossover rings on both the front and rears needed to be set again after everything was put back together and test drove to settle the suspension. They recommended 1” to 1 1/2” for the front, (mine came in at 2”) and 2” for the rears. (Mine were at 1”)

When I was putting the rear shocks back together with the new springs, I was scratching my head at how little movement of the coil was needed to install the perch. The whole thing seemed a little loose when reassembled. (I thought maybe they sent me the wrong springs) But when you do all your final adjustments for ride heights, that’s when everything comes together perfectly.

I’ll update my thoughts on ride quality at a later date, as it’s a little nippy to hit the trails right now.
 

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2020 Kawasaki KRX
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1,234 Posts
Good information. I'll be following this thread to get your thoughts and comparisons to the OEM setup.
 

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2020 Kawasaki KRX
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1,234 Posts
I think your machine setup is pretty similar to my weight wise (driver excepted...:ROFLMAO:) so it should be a pretty good comparison for me.
 

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2020 KRX
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1,116 Posts
Discussion Starter · #5 ·
I think your machine setup is pretty similar to my weight wise (driver excepted...:ROFLMAO:) so it should be a pretty good comparison for me.
Yeah, I made sure to have everything in the car that would normally be there. I had a friend come over and take the measurements with both my wife and I in the car. ST is adamant about taking your time and getting everything dialed in correctly.
 

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Thanks for the Write up - do you know what the number was on your top spring for the front? just doing a comparison
 

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can you shoot a picture of the installed rear shock? I'm wondering how collapsed the upper spring is at rest.
 

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2020 KRX
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1,116 Posts
Discussion Starter · #9 ·
Thanks for the Write up - do you know what the number was on your top spring for the front? just doing a comparison
Here ya go...
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can you shoot a picture of the installed rear shock? I'm wondering how collapsed the upper spring is at rest.
Not a problem.
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And as a little side bonus, I actually like the way the silver springs look on the white version better then the red.
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2020 Kawasaki KRX
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I agree about the silver springs vs red springs. I like 'em!
 

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Good write up. I just installed mine yesterday and thought the same thing about the rears. I set mine up to almost 16" in the rear in anticipation of some sag. In doing that I had to run my crossover rings all the way down to achieve the recommended 2" spacing between the crossover and the spring divider. If I have to tighten the springs up any more I won't be able to maintain that. Have you had much sag in the rear yet? I feel they could have gone heavier with the rear lower springs. Also, how do you like the ride? Mine hasn't moved yet.
 

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2020 KRX
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Discussion Starter · #13 ·
Good write up. I just installed mine yesterday and thought the same thing about the rears. I set mine up to almost 16" in the rear in anticipation of some sag. In doing that I had to run my crossover rings all the way down to achieve the recommended 2" spacing between the crossover and the spring divider. If I have to tighten the springs up any more I won't be able to maintain that. Have you had much sag in the rear yet? I feel they could have gone heavier with the rear lower springs. Also, how do you like the ride? Mine hasn't moved yet.
I have yet to put any miles on it since the install. The weather is starting to turn good, so I’ll be back out on the trails soon.
I thought about the adjustments on the rear when I was installing them, and wondered the same as you regarding being out of adjustments after the initial sag from new. Time will tell, and ST warranties them, so if it’s not right, they’ll have to send new ones.
 

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2021 Blue KRX 1000
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Awesome post and much appreciated information. I'll be using shock therapy when mine finally sag down.
 

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2020 KRX
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Discussion Starter · #15 ·
I finally got a chance to hit the trails today on the new springs. There is a huge difference between stock and the ST ones.

For starters, I had to crank the shocks all the way up when riding on pavement due to a significant increase in body roll when cornering. Never had to do that with the stock springs. Once we got to the trail head I cranked them all the way down, then up 9 clicks on all 4 corners. We hit some whoops and the machine just glides across the top like nothing, very little movement in the cab. The suspension just eats up ruts with drastically reduced jarring in the cab. I still had some body roll when cornering, so I cranked up the shocks to 12 clicks total, and that fixed that problem. IMHO, they are well worth the investment, as it makes an already great machine even better. 👍🏻
 

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Just want to let everyone know that Shock Therapy no longer supplies the divider or the perch for the rear spring replacement. During installation last night I tore the box and packing apart looking for these items. I wound up calling ST and was advised that they now supply longer lower springs and the perches and dividers were not needed anymore, I was to use the stock pieces. so now, you get 8 springs in the box, 4 for front and 4 for rear. I installed them at the same settings in the video and my machine sits perfectly with 15" in front at a-arm tab and 14.5" in rear at bottom of skid plate. I used a coil spring press bought on eBay, I had to use a bar clamp to hold the lower jaws closed, due to the reservoir would not allow the threaded rod to hold the jaws together. I have nearly every Kawasaki add-on there is including spare tire and carrier and I am very happy with how my machine now sits. I am riding this weekend at Rock Run in Patton, PA so I will provide an update with how it rides on Monday.
KRX ST Install Rear pic.jpeg
KRX ST Install LF pic.jpeg
KRX ST Install front pic.jpeg
 

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Discussion Starter · #17 ·
That’s interesting. That leads me to think that they may have run into problems with the shorter rear springs. Time will tell on my end. The good thing is they’re warranted for life, so if I run into problems, they’ll send out the new version for replacement.
 

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That’s interesting. That leads me to think that they may have run into problems with the shorter rear springs. Time will tell on my end. The good thing is they’re warranted for life, so if I run into problems, they’ll send out the new version for replacement.
I wish I would've measured the ST springs and compared them to the stock ones. Two of my buddies are now ordering them and I will definitely do a comparison stock to ST.
 

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On my Allthingz shock tenders, I find the longer front spring really allows you to feel more suspension travel, as in the body roll...........but in a corner mine takes a set and hold flat, but you feel the travel getting there. I run my clickers at almost full soft. I WANT that suspension to travel. Front Tender spring compared to stock. Not shabby for $240 for front and rear tenders that brought me up to 16.5" clearance after setting up the fronts a couple times

front springs.jpg
 

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2020 KRX
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Discussion Starter · #20 ·
Yeah, here’s the OEM vs ST springs in size.
Here’s the rears, and as you can see, the ST main spring is shorter then OEM, hence the need for the perch and divider.
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And in the fronts, the main spring is almost equal in size to the OEM ones, but the upper spring is almost twice as long.
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