Originally posted by Tmod
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+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. Odds are you weigh more than that so....
Racetech sells springs that are rated for different rider weights. Take a look at their website. I don't know if they ship to/have distribution to your part of the world, but you can at least find out what spring rate you need. Suspension shops in your neck of the woods should be able to get you springs of that correct rate. Here they sell for ~$120. If you weigh more than 170lbs, or ever do 2 up riding, it is very very worth it.
Even if you get an aftermarket shock, it will likely have the wrong spring on it for your weight, and the valving would likely be incorrect for your weight/riding style. I'm a cheapass, but holy $+✓Ž©! Upgrading the suspension is well worth it, night and day difference.1998 Katana 750
1992 Katana 1100
2006 Ninja 250
2006 Katana 600 RIP - 130k miles
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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.
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Last edited by ZookRick; 07-25-2017, 12:58 PM.1989 GSXF 750 Katana.
V&H supersport exhaust, ported head, GSXR cams
Michelin PR2's, RT fork springs and R6 shock
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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.Last edited by Seft; 07-25-2017, 03:45 PM.
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Originally posted by Tmod View PostSeft,
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.
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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Originally posted by Seft View PostWas 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!!
A decent suspension shop should not have any issues revalving/rebuilding a OEM post 750 shock.
Originally posted by ZukiFred View PostT who? Name sounds familiar..
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