View Full Version : Suspension

03-04-2004, 06:20 AM
I have finally gotten rid of my 996s and pick up the Factory on Saturday.

Does anyone know what the front and rear spring rates are for the factory so I can work out what mod's I need to make.

Once suspension is set-up then I can start checking on what needs to be modified on the rest of the bike - from a quick look on the forum it looks like it could be interesting


03-04-2004, 07:50 AM
the forks ar 0.95kg springs and the shock is around 550lbs

yeah i know, one is i kg, one in lbs.

i will check the kg conversion when i get to work

03-04-2004, 09:54 AM
1kg is 2.2lbs :bond:


03-04-2004, 10:10 AM
Thanks Clarkie

The front springs are the same as my 996s and the steering head angle is very close so I wont need to change them, maybe just the level of the fork oil and spring preload.

I will have to check out the rear - If you know what the leverage ratio's are for the swing arm it will save me some measuring / weighing ?

The conversion for springs is not as easy as 2.2, as the springs are rated as kg/mm, N/mm and lbs/inch so it is a force / distance conversion.

03-04-2004, 10:24 AM
1090-31/95 spring which is

160mm (6.3") length

spring rates are as floows - in three different measurements

9.59 kg/mm

if you dont mind me asking what do you weigh?



03-04-2004, 10:42 AM

I weigh 124Kg inc. leathers etc.

It usually means when people complain about suspension being to harsh, I find it soft and need to increase the spring rate.

As I said before from experience the front should be OK.
I will need to try and set and measure the rear droop with bike and bike/me before I know whether the rear will be OK.


03-04-2004, 02:24 PM
hey paul,

i would measure the front and try to get around 36-38mm sag, you may have to go to a 1.1kg front spring to get that.

not sure on the rear but again try to shoot for 30-35mm sag


03-04-2004, 06:41 PM

I usually try for 10mm sag - bike only
Then 25-30% of suspension travel - bike+rider

The roads I ride on are seriously bumpy, I think looking at geometry (24.8deg) 1.1 springs could be too stiff probably OK for smoother roads / tracks

I assume the spring length you quoted is Free length ?

Have you any Idea what Wheel travel / Shock travel ratio is on the back ?