Tight Ass suspension upgrade - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 14 Old 02-24-2017, 02:33 AM Thread Starter
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Tight Ass suspension upgrade

I've got a 2005 Strom with 86000km and I'd like upgrade the front suspension without spending too much. I weigh 70kg so I'm assuming that the stock springs are right?

I ride on and off-road and find it fine on road but it bottoms out off-road, not all the time but still enough for me to have to slow down or change my riding style.

I'm not sure if I want to spend the $$ on Valves or if I should just change the oil weight and see how it goes.

Any recommentations on cheapish mods that would improve the suspension?
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post #2 of 14 Old 02-24-2017, 04:22 AM
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To clarify, you indicated valves and since there is no bike listed in your profile, you have a Vee?
So, if you have already set the front shock pre-load, then change the fork oil. If that does not yield the results that you are looking for, then upgrade the valves. This can be done without loosing too much fork oil, if you work carefully.
Simply follow the steps from the threads on fork seal replacement or the upgrading front suspension, to help with the process. Many have done this before and the threads are available. Good luck
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post #3 of 14 Old 02-24-2017, 06:07 AM Thread Starter
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Quote:
Originally Posted by Gert View Post
To clarify, you indicated valves and since there is no bike listed in your profile, you have a Vee?
So, if you have already set the front shock pre-load, then change the fork oil. If that does not yield the results that you are looking for, then upgrade the valves. This can be done without loosing too much fork oil, if you work carefully.
Simply follow the steps from the threads on fork seal replacement or the upgrading front suspension, to help with the process. Many have done this before and the threads are available. Good luck
Thanks Gert, yes I have a Vee. What weight oil would be recommended for my weight?
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post #4 of 14 Old 02-24-2017, 07:11 AM
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Quote:
Originally Posted by Dan the Man View Post
I've got a 2005 Strom with 86000km and I'd like upgrade the front suspension without spending too much. I weigh 70kg so I'm assuming that the stock springs are right?

I ride on and off-road and find it fine on road but it bottoms out off-road, not all the time but still enough for me to have to slow down or change my riding style.

I'm not sure if I want to spend the $$ on Valves or if I should just change the oil weight and see how it goes.

Any recommentations on cheapish mods that would improve the suspension?
Really, the stock springs are too soft for you. A set of 0.90s will help a lot.
If you want to try just fork oil first, try 10w.
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post #5 of 14 Old 02-24-2017, 07:45 AM Thread Starter
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cheers, being a light weight I thought the springs would be ok but that was just a guess. If I change the oil first and still need more then I can always do the springs after?
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post #6 of 14 Old 02-24-2017, 08:10 AM
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Spend extra and get Silkolene RSF Pro, and perhaps before changing put in cheapo ATF and flush wear deposits out.

RSF is Group V ester fluid with unbelievable viscosity index. It could be below freezing or 45C it doesn't matter damping staying the same very consistent.

Edit: here is the article to help with viscosity selection..
http://www.peterverdone.com/wiki/ind...spension_Fluid
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Last edited by cyclopathic; 02-24-2017 at 08:12 AM.
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post #7 of 14 Old 02-24-2017, 08:16 AM Thread Starter
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Thanks Cyclopathetics!

How many letres would I need?
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post #8 of 14 Old 02-24-2017, 03:11 PM
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Originally Posted by Dan the Man View Post
cheers, being a light weight I thought the springs would be ok but that was just a guess. If I change the oil first and still need more then I can always do the springs after?
Yep, no problem doing it that way.

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post #9 of 14 Old 03-01-2017, 08:16 PM
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I'm pretty sure that Suzuki's test riders are an elite cadre of retired anorexic ballerinas and jockeys. These wizened wee folk carefully determine the spring and damping rates for Suzuki's bikes, even the ones sent to the sturdy, well-fed riders of Europe and the Americas.

Even at just 70kg, you outweigh them (the whole lot) by a good bit.

It's either that, or Suzuki got a great deal on a huge ship load of piss-weak fork springs back in the early '70s and they're still trying to use them up.

Either explanation makes just as much sense. Suzukis have always suffered from very weak springing, and no one has ever quite figured out why.


I've measured too much sag on bone-stock V-Stroms without a rider aboard. If you have a preload adjustment, you can crank this up a bit, but the fact remains that the stock spring rate is far too weak for the smallest, gentlest rider.

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post #10 of 14 Old 03-01-2017, 08:39 PM
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My Wee was in dire need of stronger fork springs. My Glee was okay as bought.
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Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

Please vote in the poll on what Strom(s) you have at https://www.stromtrooper.com/informat...-you-have.html
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