I spent 850 on the rear shock and placed this myself ,
think about 200 for the fork springs and this my dealer did .

another question on the ohlins setup ,
for the onces who have the shock on their bike ...

is it normal the shock is completely winded up ? as you can see it's on his max setting
this is stock as I only gave up my weight and riding style and ohlins got me the shock like this .

Just put it on the bike and started riding it ... , I'm just wondering ,
when I'm next to the bike and try to lift the tail the spring does not extend either ...
it's not that clear to me what will happen if I screw it in
a few turns , lowering the bike I suppose , and increasing the hardness of the spring?
I'm a very light guy (72 kilos including gear) so maybe that's why it's at maximum setting?




http://farm8.staticflickr.com/7201/7...12b84868_o.jpg

Hey fella. That shock has the spring preload wound fully out. I would expect the shock to sag quite a bit when you sat on it.
If you wind the preload on it won't affect the static height of the bike, only how it reacts to you sitting on it.

Hi guys. My understanding is that winding on preload on the rear shock will only raise the back of the bike by effectively pushing out the shock. If you imagine that in a set position 50% of the shock travel will be in compression and 50% in rebound then winding on more preload will push the spring down and extend the shock. It will not change the spring length (unless you run out of shock extension and start to compress the spring). This means there is more travel available for compression and less for rebound, so there may be 60% of the travel for compression and 40% for rebound for example.
If you weigh 72Kg then you will compress the spring by a certain amount when you sit on the bike, say 50mm for sake of argument, and the bike will sag to a point, say call that point A measured from the ground up. Adding preload will raise the back of the bike but your weight stays the same so you will still compress the spring the same amount 50mm and the bike will sag but will now sit at a point B. This is because changing preload does not change the spring characteristics. What changing preload will do is account for more weight on the bike (if you load it up or take a pillion) compressing the spring so that you can return to point A. This means that you again have the original spilt between compression and rebound.
That�s my understanding anyway, and to be honest I got that from a book called the �Race Tech Suspension Bible� which explains suspension in a fairly clear way, although it�s still a bit of a black art. I�m no expert and I�m sure there�s a lot more to it that I don�t fully understand.

Adding preload will never raise the bike at static height. The shock is a fixed length at extension and if you assume that unladen the shock is at full extension then it cannot be extended any more however much preload you apply.
Preload affects how much the bike will sag when laden, hence the term pre-loading the spring.

Can any one that has replaced their rear shock tell mw how they got the top bolt out ? 2 questions
1) do you have to take out the entire air box to get to the nut on the left ( looking forward from the bike )
2) Does the top bolt come out far enough to the right to miss the exhaust or do you have to take that off ?
Thanks
Scott

Stock answer is: You need to take the exhaust "Y" pipe/collector off (no need to remove the airbox).

There is a mod you can do to help future shock changes, but it ain't going to help you the first time! ;)

This involves drilling a hole with a hole saw in the airbox so you can get access to the bolt, then plugging it with a grommet. The catch is you have to do it the standard way first and when you reassemble it, put the top shock bolt through the other way round so you can pull it out the RHS of the bike, not the left.

I've just done a quick search and found the original thread about this mod...

http://www.xt660.com/showthread.php?t=19485

Looking for upgrade on my XT660ZA (ABS)... Unfortunately, there is no NITRON available at the moment.. Does anyone have any suggestions for the ABS model?

Thank yoU!