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Exhaust & Mod Shop Looking for the best exhaust for your Kat or need help with the installation ?
From the Mesh Mod to the Fender Eliminator, installing new signals, Braada Cowls,
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Old 07-25-2017, 02:38 PM   #21
Seft
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Originally Posted by shpielers View Post
+1. Your old springs aren't going to be worn out or anything, they just likely weren't proper for your weight. The Kat suspension was set up for something like a 135lb rider.
Thanks, you suspected right, I come in about 79kg(174lbs) would need to weigh leathers etc as well to be accurate though. I've seen a few suggestions of the weight the springs were intended for and all of them different, is there any way to find out for sure, not clear from the manual?

Last edited by Seft; 07-25-2017 at 03:45 PM..
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Old 07-25-2017, 03:45 PM   #22
Seft
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Originally Posted by Tmod View Post
Seft,

Respringing the rear is fine as it has the rebound to control it assuming we are talking the post 750 shock. Respringing the front is fine but will require a bit heavier fluid to slow the rebound down. Since we don't know your weight or at least I didn't see it we are not able to recommend a spring rate for you. All aftermarket shocks are not created equal and if you found a aftermarket shock for near the cost of a revalved OEM then it is probably a pretty cheap quality aftermarket shock and the piston design will be inferior to the OEM piston in the shock. Not to mention on the OEM post 750 you have preload, rebound and compression adjustability. Normally that ranges right about $1000 USD for a decent aftermarket.
Was talking about the YSS aftermarket rear shock, think you said it was same as a Showa one but it's not the same as the 750 shock and from what you say likely to be quite poor in comparison. So, if I can't find anywhere local that specialises in suspension and could set up (re-valve) a post 750 shock and I need to go down the aftermarket route what brands should I be looking for and which should I avoid?

Incidentally I'm about 174 lbs, I've found a couple of sites that had calculators on them but then no one that sold spring it said in the U.K. that matched the result, what's the magic formula I should be using for spring rates for a post 600? Clearly I need to do a lot more reading about suspension too and get a better understanding of what effects what when it comes to riding too!!
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Old 07-26-2017, 07:31 AM   #23
ZukiFred
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Originally Posted by 92xjunker View Post
TMOD is the suspension expert.
T who? Name sounds familiar..
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Old 07-27-2017, 02:01 PM   #24
Tmod
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Quote:
Originally Posted by Seft View Post
Was talking about the YSS aftermarket rear shock, think you said it was same as a Showa one but it's not the same as the 750 shock and from what you say likely to be quite poor in comparison. So, if I can't find anywhere local that specialises in suspension and could set up (re-valve) a post 750 shock and I need to go down the aftermarket route what brands should I be looking for and which should I avoid?

Incidentally I'm about 174 lbs, I've found a couple of sites that had calculators on them but then no one that sold spring it said in the U.K. that matched the result, what's the magic formula I should be using for spring rates for a post 600? Clearly I need to do a lot more reading about suspension too and get a better understanding of what effects what when it comes to riding too!!
I think I remember seeing the YSS piston design and it was a Showa piston same as the OEM post 750 kat shock. Keep an eye out for things like is the shock an emulsion shock, Any adjusters? What spring rate does it come with and would you have to change it out for something that would be a better fit for you. I am estimating that the spring you would need would be right about a 15.8 kg/mm (900 lb). Not many aftermarket choices for the kat since it is an older model and was not that popular for aftermarket suspension from the start. Nitron makes a nice shock but then the price goes up.

A decent suspension shop should not have any issues revalving/rebuilding a OEM post 750 shock.

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T who? Name sounds familiar..
Must be some potato farmer from North Idaho. I think the company re-name is spud suspension or something like that.
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