Topic: Can you identify these Koni's?

[speedknot]

Hi all!  I just took delivery on a beautiful set of Koni's for my CB400F project.  I cant seem to find a model number on them.  Does anyone know what load rating shock springs these are?  The springs are shown in the pic, black w/green dab.  I tried to compress these down with all 210lbs of me but they wouldn't budge.  I think these springs might be a bit too strong.  Does anyone know where I would find springs for these? 

[Retro Rocket]

Try contacting these guys, they took over Koni and they are now called Ikon shocks.

http://www.ikonsuspension.com/content/the_ikon_suspension_story.shtml

Mick

[dave400]

Hi all!  I just took delivery on a beautiful set of Koni's for my CB400F project.  I cant seem to find a model number on them.  Does anyone know what load rating shock springs these are?  The springs are shown in the pic, black w/green dab.  I tried to compress these down with all 210lbs of me but they wouldn't budge.  I think these springs might be a bit too strong.  Does anyone know where I would find springs for these?  

Those shocks look like mine and  the model number is stamped on the side of the body behind the plastic cover inside the spring 78K-1302, mine also have the green dab on the spring like yours. They’re also very stiff! even after putting fresh oil in them but once fitted on the bike they work fine.
Cheers

Your PM's option is full.

[fasturd]

I have the same set, the number should be on the shock body under the plastic cover. I cannot remember the spring marking cover on mine but the springs and damping are PERFECT on my 400F. I am about 190...

[traveler]

they're junk....I'll give you 40 bucks for them.

~Joe

[fasturd]

DAmn I wish I would have thought of that! lol

[eurban]

I doubt the problem is with the spring(s).  I would suggest taking the spring off of the shock and feeling its dampening action prior to install.  Anything but smooth operation is trouble.  I have two sets (one NOS that I paid good $ for) of those alloy bodied Konis acting as paperweights in my basement.  Why?  The internal plastic parts tend to turn to goo and muck up the oil passages.  The end result is erratic compression or even total lock up.  Disassembly, requires fabricating a custom spanner and once you are inside there are difficulties with cleaning, particularly the piston ("dissimilar metal" locked to the shaft) and the foot valve (which has a bazillion pieces all set under proper tension by the factory).  I purchased some of the rebuild parts from Ikon but was never able to get things properly cleaned and reassembled.  . . .Hope you have better luck than I did.

 PS, if you find that your shocks are OK, measure their length and I can compare to my sets for the 750.  I have a few sets of springs that might work for you.

[fasturd]

I jut took a closer look at mine . They have the green spring marking also.My 400 works perfectly for my 190 lbs with those springs. They are hard as heck to move when not on the bike ...But they should be. If they dont move EVER they may need to be cleaned. I have a friend who will be documenting that process in the near future.

[eurban]

In my experience, shocks properly sized for one up on a small bike like the 400s will not be that difficult to compress.  A certain amount of sag should occur to allow the wheel to move both up and down with the contours of the road. . .As I said it would be wise to test the dampening function of the shock shaft independent of the spring.  My sets were "crunchy" in compression when tested by hand with no springs and would not really compress at all when installed on the bike and used in the real world. BTW, those shocks do have adjustable compression dampening.  While the springs are removed the shaft can be fully compressed and turned clockwise/counterclockwise to change compression characteristics.  Somewhere in my basement I have the original instructions.  Again, good luck, just don't make the same mistake I did and spend way too much time and $ on a paper weight. . . .