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I have recently installed some new suspension upgrades. I was not happy with the OEM front diving too much under heavy braking, even with full preload dialed in. I was also unimpressed with the OEM rear shock being too soft, even with full preload dialed. This was especially true when riding 2-up. I weigh 240lbs, and my wife about 135lbs. We also ride with Givi hard luggage on some trips.

The purpose of this post is not to instruct others on installing these upgrades, but rather to supply a few interesting pictures and supply a bit of information for those interested.

Front: Sonic 1.0 kg/mm Springs, sourced from http://www.sonicsprings.com/catalog/
I paid $79.95 + shipping.

Going with the Sonic springs was a relatively easy decision, since so many forum members here seem happy with their performance. I was pleased with the price and Sonic's online spring rate calculator. Depending on my riding style, it suggested either 0.95 kg/mm or 1.0 kg/mm, so I went with the heavier rate. I am using a 50/50 mix of 10W and 15W for oil, yielding a 12.5W oil. So far I have done a few short trips with the wife on board at 2 lines of preload showing, and the front end does not dive like the OEM did on full preload. I am very pleased.

Picture 1- At the top of the picture is the OEM spacer tube and OEM progressively wound spring. At the bottom is Sonic's plastic spacer and 1.0 kg/mm constant rate spring. I cut the plastic spacer to the installation instruction's suggested 4.25" and this resulted in the desired 0.5" of spring preload when the preload adjuster on the fork's top cap is dialed in to half the available preload;


Picture 2- Plastic spacer cut to suggested 4.25";



Rear: Hyperpro Progressive Spring, sourced from
http://www.hyperprousa.com/
I paid $119.95 + shipping.

Deciding what to go with on the rear suspension took a little more research. After seeing a picture of Stromboli's jig (Thank-you Stromboli!) for changing out the rear spring on the OEM shock, I knew that I wanted to replace the spring, and not the entire shock, especially since my shock is still almost new. From what I gather, Wilber's makes replacement springs, but availability has potentially become an issue here in the United States. I decided to try Hyperpro, since it was a progressive spring and it was relatively cheap and readily available.

Other than the purple color of the spring (I had to paint it black) I have been pleased with the Hyperpro's performance. It feels about the same as the OEM spring for the first third of its travel. However, it is indeed "progressive", as it gets firmer as more weight/load is applied. I no longer have to dial in full preload, and I can use the preload adjuster for its intended purpose. As you can see in the picture, the Hyperpro is "beefier-looking" than the OEM. The OEM spring weighs 3.3 lbs, while the Hyperpro weighs 3.9 lbs.

Picture 3- OEM shock and spring in "Stromboli" compression jig;


Picture 4- Compressing the OEM spring to expose the retaining ring. This ring needs to be removed to allow shock disassembly;


Picture 5- A close-up of the removed retaining spring;


Picture 6- The OEM shock and spring (silver) and preload aduster next to the Hyperpro spring (black);


Picture 7- A close-up of the preload adjuster in the "fully-in" position;


Picture 8- The new Hyperpro spring installed in the OEM shock housing;
 

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Love your spring compressor. I see you used the KISS method. "Keep It Simple Stupid"
 

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nice write up, great photos.. and I love your garage floor :bom_builder2:
 

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My kind of DIY'er. Spotless.

As my kid gets bigger, my spring gets smaller. I'll be doing this in the next few months. Good one to bookmark.
 

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How did you get that ring off with the 'Stromboli' so close to the shaft - there appears to be no room to finagle. Details please!
 

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Discussion Starter #6
How did you get that ring off with the 'Stromboli' so close to the shaft - there appears to be no room to finagle. Details please!
The picture doesn't show it, but you only need clearance measuring the width of the ring on each side.
 

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Excellent info! Thanks! :hurray:

I believe my Vee is getting a new shock spring ASAP. Of course, I'd like the full Sasquatch rebuild, but $130 vs. $450... yeah.
 

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Just an update -- I ordered a Hyperpro spring this morning and they are currently out of stock on the DL1000 springs.

However, I talked to Sam, and he says it'll only be about a week. Can't complain too much about that. :mrgreen:

He also mentioned that he had five in stock last week -- 'tis the season to monkey with your V-Strom's suspension, I guess.
 

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can someone tell me what size allen wrench is used to take the set screw out on the preload collar? only post i can find says .5mm, that cant be right, and i want to have everything ready before taking out the shock, thanks, Pepe
 

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can someone tell me what size allen wrench is used to take the set screw out on the preload collar? only post i can find says .5mm, that cant be right, and i want to have everything ready before taking out the shock, thanks, Pepe
1.5mm
Be very careful when removing it, because it's easy to round it, and then you will have a problem getting it out.
Use a good quality alen wrench and go slow. Squirt some penetrating oil before you try to get it out.


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It's was really easy to change the shock after removing the screw out of the preload collar


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thanks, i got it out after some oil and heat, about the same setup too, with threaded rods and 2x4's, big difference with new springs up front and in the back, no more scraping the bash plate going home,
 

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Thanks to this thread and another
I finally got around to swapping my rear spring out
That set screw was A b^%#t
Other then that it was easy peasy

What is that set screws purpose anyway
Just to stop the adjuster assembly from turning???
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