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Old March 13th, 2019, 01:00 PM   #1
john pierson
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SHOCKS

Any different alternatives other than GSXR found? I put a SV650 spring on mine only to find it was stiffer. Luckily I have another GSXR unit on hand.
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Old March 13th, 2019, 04:16 PM   #2
DannoXYZ
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Due to difference in wet kerb-weight, pretty much any shock from any other bike will be stiffer than Ninja 250's. However, that may be good thing if you're on heavy side 70kg+. The GSX-R's shocks are all stiffer than SV650s.
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Old March 13th, 2019, 07:02 PM   #3
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Here's a thread about mounting a GSX-R 600 shock, (and other info lower in the thread) I used one off an '09 which is the stiffest spring of the diff. years (525 lb) and it is none too stiff on my track bikes. I'm about 185 lbs geared up and the bike is around 310 lbs. I'd guess the leverage ratio on the shock links are quite different as the boy's GSX-R 600 seems stiffer sprung than the 250 Ninjas even though it's heavier.
https://www.ninjette.org/forums/showthread.php?t=214238
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Old March 14th, 2019, 10:58 AM   #4
john pierson
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I'm in SHOCK!

I've done a number of shock swaps on different bikes so nothing new. Just curious to see if any new ideas have come up. Regarding the SV spring I mistakenly assumed it was softer. But after feeling it was stiffer I did more thinking. SV & GSXR springs are same length & wire size but SV smaller OD. Visualize them as straight rods instead of coils. The longer piece is easier to twist with a given amount of force therefore a softer coil. The difference must be in the linkage ratios used on each bike. I'll be putting my spare GSXR unit on soon. I get the curb weight issue too as my SV w ZX10 shock is near perfect as those bikes weigh about the same. The 1st GSXR install worked great w modded fork but just a bit stiff for this 1946 body.
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