Quote:
Originally Posted by Ghostt
If your going to do the forks, you must do the rear as well, to maintain the balance of the bike, doing one without the other is unsafe IMHO, and will cause the bike to react unfavorably.
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The stock spring rates are completely unbalanced. You need around .60kg/mm (36% stiffer) fork springs just to match the rear, which is still too soft for a lot of people. Doing only the fork springs will make things a lot closer to balanced than they were from the factory. Yes, you should do both ends for best results, but you're still improving it over stock just with the front end upgrade.
I put 54% stiffer fork springs in my 500, and it was a massive improvement, without any other suspension mods at the time.