Excellent info slegrosI ran a K5 at the Suzuka round of the all Japan superbike championship. Unfortunately on a stock suspension. Myself and a freind Akira Tamitsuji(13th overall JSB last year) both tested my bike and both found we liked the same settings give or take 1 click:
All of the below are for a BONE stock suspension, I'm about 175-180lb..
-Forks dropped 5-8mm
-Preload: 3 lines showing
height: +2mm(spacer under the clevis), but run stock height if you can get a stiffer spring or aren't grounding out.
Comp: Stock +2
We found the rear shock to work surprisingly well from the factory(no joke) The spring at 80N/mm is a bit soft for both of us(i'm 175lb.) Those considering keeping the stock shock may want to swap on a spring off a 03-its 85N/mm. Although I'd reccomend even going to a 95n/mm(what we are running on the new Ohlins- 95N/mm=9.6kg/mm=525lb/in. approx.)
The stock linkage is very slightly rising rate and works fairly well, not scary like the std link off the 01. Several teams have experimented with longer dogbones to get a more linear progression out of the linkage with good results. Not sure how much longer though.
The stock springs and oil level on the front seemed pretty good(9.5 n/mm w 101mm oil) you could probably even drop the oil level down to 120mm with no problems depending on your preference.
The damping is absolute garbage in the forks-horribly underdamped.
The bike seems to like the wheelbase long and the COG as low as possible. We were running 27mm triples off our old bike. The stock at 30mm are a bit twitchy.
For the rear you'll probably need a 550 pound spring, maybe more. Stock is 425.Im new to the street bike world, I have raced motocross and super moto for years. I have a 2005 gsxr 1000, I am 250 lbs. in street clothes, please advise on front and rear spring weights and oil height along with comp. and rebound settings to get me in the ball park. Thanks guys.
Old thread I know but I have just put a springs in mine.I On either shock stock or Ohlins it seems to like 30-35mm of sag, any less and it seems to get a bit twitchy on the brakes. I cant remember how many mm of thread on the body, but whatever will give you about 30mm of sag should be good. My guess is about 12mm of preload on the spring.