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The Bouncing Beast

exdirtbiker

exdirtbiker

Forum Mentor
So the Beast came to me with Koni rear shocks. I was happy. Then I found the rear wheel bouncing violently under braking. I am no longer happy.
( I'm glad I was not in a curve at the time!)
The shocks are "boingers", no damping at all.


They say "7610F-1282"
I look up that number, found out they belong on a GS400 or GN250? :mad::mad:
Anyone know if I should try to rebuild these, or will they always be too small for my bike?
 
I don't know anything about shocks but if they are rated for a 400 or 250...NO, they will not suffice for your 1000. :)
 
They might not even be genuine Konis - the GS400/GN250 origins makes me leary - there's a lot of Chinese factories knocking out cycle parts for those models as they're very popular there.
You can have a factory put whatever name you like on a shock.
 
Well, the number is correct for Konis and it should say Koni on the top collar

I'd pull the spring off one and manually check the dampening first

Konis can be rebuilt, and parts are available, but it may be cheaper to buy some new shocks and sell these off to someone with a 550 or 450

Plus, they're old. Koni stopped making bike shocks ages ago. Ikon makes them now

Are you sure your braking issue isn't the result of a too soft front fork?
 
Last edited:
If they are rebuildable Konis and they fit a 1980 450 I need a pair for mine.
 
I'd have another set of Marzocchis like a shot - until they succumbed to alloy collar rot, they were a good balance of stiffness and damping. The ones I fitted were originally on a GT750 Kwack so were kinda sorta the right spring rate, but Marz of the day were known to be a bit stiffer out of the box, so the match was fine.
 
They are real Koni.
Wold anyone really pay for blown-out shocks? These things have no dampening left.. nothing.
Suggestions on where to buy replacements?
 
I think Progressives are the best value. Or Hagons. YS is the next step up (I think). Beyond that you are getting into big money.
 
"If they are rebuildable Konis and they fit a 1980 450 I need a pair for mine."

tkent02, I would sell them to you, but you said bad things about my L , so you can't have them.
 
The kit says it fits all the 7610 series shocks, so you would be OK

Sell them to Tom and get some that are correct for your bike
 
exdirtbiker said:
"If they are rebuildable Konis and they fit a 1980 450 I need a pair for mine."

tkent02, I would sell them to you, but you said bad things about my L , so you can't have them.
Click to expand...

NO no, you have it backwards. Kent said bad things and you let him wheedle you into selling him shocks that don't work. LMAO
 
I must be missing something....
a few of the shocks available are listed as
" 2 NEW SHOCKS COMES WITH BUSHINGS AND SHOCK TOOL
335MM-13.2 INCHES EYE/EYE
FITS

GS300 83-85
GN400 80-82
GS450 80-83
GS550 77-82
GS850 78-82
GS1100G 82-83 "

Seems like "one size fits all" to me.
So.... what's different about the Konis ?
The spring rates or internal damping ?
 
exdirtbiker said:
I must be missing something....
a few of the shocks available are listed as
" 2 NEW SHOCKS COMES WITH BUSHINGS AND SHOCK TOOL
335MM-13.2 INCHES EYE/EYE
FITS

GS300 83-85
GN400 80-82
GS450 80-83
GS550 77-82
GS850 78-82
GS1100G 82-83 "

Seems like "one size fits all" to me.
So.... what's different about the Konis ?
The spring rates or internal damping ?
Click to expand...
For $49. just rebuild the Koni's , if you still don't like them sell them to Tkent as rebuilds and charge him more. That will then help offset the cost of the new Proggresives that you will be buying. :p
 
After more research, it seems that you have to "guess" at how much damping you will need as you re-assemble the shock ?
and if you guess wrong, take them apart again and "try, try again" ?
.. uh boy ...
 
Anyone ever use air shocks? I've never rode them. Not sure I even saw them on a GS before.
Found some cheap.
Any opinions ?
 
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