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Modifications - Performance Discuss aftermarket and DIY performance modifications
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  #1  
Old 07-23-2012, 09:20 AM
TR Versys TR Versys is offline
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Default Fork Oil

Since there don't seem to be any good front suspension options to reduce brake sag because aftermarket springs are too stiff and pricey, I had the fork oil and seals changed instead. It's like a new suspension. This 2008 was bought used with 7500 miles, now has 9600, and I assume never had the fork oil replaced. The rear shock has always seemed just fine to me.
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  #2  
Old 07-23-2012, 10:57 AM
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andrewhtf andrewhtf is offline
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Did you used a different oil weight or the standard 10wt?
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Old 07-23-2012, 12:44 PM
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Here's what I use, which really improved my front end.
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My KLR trip to Alaska, YT, NWT and BC in summer 2009
http://www.klr650.net/forums/showthread.php?t=69383

My Versys trip to D2D 2013, and Alaska, June '13
http://www.kawasakiversys.com/forums...ad.php?t=33153
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Old 07-23-2012, 03:04 PM
TR Versys TR Versys is offline
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Quote:
Originally Posted by andrewhtf View Post
Did you used a different oil weight or the standard 10wt?
No, I had the stock 10W installed. I know people use ATF, but what viscosity is it?
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Old 07-23-2012, 06:16 PM
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andrewhtf andrewhtf is offline
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I remembered reading somewhere about 7.5wt, i could be wrong though.
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Old 07-23-2012, 08:18 PM
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Original Showa SS8 (SAE 10W) fork fluid has a viscosity of 36.47 cSt @ 40C (104F), 7.24 cSt @ 100C (212F) and 167 viscosity index. It also looks and smells just like ATF.

Fasteddiecoperman used WalMart's Super Tech High Mileage ATF made by Warren Performance Products (WPP), most likely the equivalent of http://www.wd-wpp.com/greases/greases008.pdf which has a viscosity of 34.5 cSt @ 40C, 7.3 cSt @ 100C, and 187 VI... Viscosity and viscosity index vary between different types and brands of ATF, and between different brands of 10W fork fluid.

Fork operating temperature is normally at about 26~33C (78~91F) in 21-28C (70-83F) ambient temperatures.

With maximum or near maximum fork spring preload, I get sufficient rebound damping and motion control with 12.5W, a half and half mixture of 10W and 15W fork fluid.

http://www.maximausa.com/shopping/in...products_id=44

Last edited by invader; 07-23-2012 at 10:51 PM.
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  #7  
Old 11-10-2012, 12:20 AM
Newsshooter Newsshooter is offline
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Aftermarket springs are too stiff and too pricey? You should be able to order the spring weight you want that will work best for your weight and style of riding. I prefer straight rate springs on my bikes.
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Old 11-11-2012, 12:23 PM
ScottyNeal ScottyNeal is offline
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HyperPro has progressive springs (either 30mm lower, or stock height) which eliminate most of the dive when braking hard. Also improved the ride for me (200# with gear).
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