I started the suspesion upgrades on my "04 620 today, first up was a 1098 shock install.  The install went pretty good, dropped the socket into the swing arm when removing the lower shock bolt  . 
The weather is crappy & I still need to set the sag on the bike so no word on the difference it makes.  The shock is about 10 - 15mm shorter than the stock shock, it may hit the fender, esp. on lowered bikes.  I went ahead & raised the ride hight an additional 10mm over stock for turn in & to help keep the fender from getting hit.  Has anyone found a wrench that will fit between the shock & swing arm for the lower jam nut on the ride height adjuster?  I ended up having to remove it, loosen the Jam nuts, reinstall, adjust, take it back out & tighten the jam nuts. 
The only other issue I had is when removing there was a 15mm X 6mm plastic spacer that was sitting next to the ride hight adjuster.  I could not see were it is suposed to fit & do not see anything like it in the parts catalog.  There were also a few nuts in there so it may just be something that got thrown up off the road.

Did you replace the spring? the 1098 swingarm is shorter than the monsters so the spring rate is way to soft when compared to a Monster.

I have a 1098 shock with an ohlins spring for a 200lb guy. and its going on a 695 so any words of advice you have would be benneficial. 10mm is a significant raise in the rear and your bike should turn in notably quicker. as for the lower jam nut for the ride height, i had to take mine off (S2R1000) to raise it.

Got any pics?

The spring has been replaced, but it was the previous owner not me.  I still need to set sag, but I can tell it is noticably softer than my 848 with the stock spring.
Install was very easy, the voltage regulator & crankcase vapor canister do not need to be relocated/modifed.  I need to charge my camera batteries after that I will post some pics.
The only advise I can give is to make sure you turn up the ride heght on the adjuster before you let the bike down onto the shock, if you don't it will hit the fender.

Here are a few pics of the shock.

The stock Sachs


The 1098 Showa

OK the weather cleared up enough to do some shakedown runs around the neighborhood today.  The shock resevour is hitting the rear fender under hard compression.  Also aparently my suspension settled some as my 10mm raise in ride height has reduced to about 3mm.
I would like to lift it up a little more but I am unsure how much more adjustent I have in my ride height adjuster.  My manual does not mention the max settings as it is for a 620, the 620 caperix came with an adjustable ride hight, prob. the same as a 1000.  I have about 4 threads showing now, many s4r owners on this site have mentioned 5 threads is max.  Does anyone know if the same is true for a 620 caperix, or 1000ie?  I have heard the 999 adjuster is longer, is that true & if so by how much?

Is there any chance of the resovioir hitting the wheel?

hmmmm... That reservoir looks perilously close to the wheel.... Are you sure you cannot raise the rear some more?

A 695 is even lower than a 620. Do you feel like this could be an issue?

I think if the fender was removed it would eliminate hitting.  I would like to raise the rear a little more, but am nervous about going more than 5 threads on the ride height adjuster.  I have read that is the limit of the adjustment.

the 695 should be the same height as the 620. The stock Ride height bar is pretty limited. If you let it go too far theres a chance that it could snap after a while. I know chchadder raised his rear (aftermarket ride height) about 2-3 inches, and thats where my 1098 shock was gonna go on (until he sold his bike).

Quote from: He Man on June 07, 2009, 07:09:10 PM
the 695 should be the same height as the 620. The stock Ride height bar is pretty limited. If you let it go too far theres a chance that it could snap after a while. I know chchadder raised his rear (aftermarket ride height) about 2-3 inches, and thats where my 1098 shock was gonna go on (until he sold his bike).

Actually it's a little lower. But it's cool. I'll make it fit, I have a lot of experience making shit fit. 

tahts what she said!

Quote from: He Man on June 07, 2009, 07:41:28 PM
tahts what she said!

Quote from: He Man on June 07, 2009, 04:59:42 PM
Is there any chance of the resovioir hitting the wheel?

+1.  That reservoir looks way too close from those pics/angles.  I would remove the spring and test fit the shock to confirm adequate clearance at full supsension travel.

BK

Quote from: BK_856er on June 07, 2009, 10:43:18 PM
+1.  That reservoir looks way too close from those pics/angles.  I would remove the spring and test fit the shock to confirm adequate clearance at full supsension travel.

BK

+2.

Can anyone recomend a longer ride hieght adjuster?  5 threads does seam to be the max setting on the factory monster peice.  The bike still feels a little low in the back for my tastes, I wouldn't mind going up another 10-15mm.  I'm still up in the air if I will keep the shock or not.  The price was good on it, I would love to go to an ohlins but I think the 848 would be more deserving of that.