Adjusting rear preload - GSXR100 shock.

Hi all.

Does anybody know what the total travel on a 03' GSXR 1000 shock is as written in the manual?
Spank you all.

Right found a manual...Some may find this link helpfull?
http://wotid.com/gsxr/content/view/22/43/

SO it says...
Front fork stroke 120mm (4.7in)
Rear Wheel Travel 130mm (5.1in)

Obvious question but I take it that's what I'm after for the rear shock travel. 5.1 inches?

I think the shock travel (ie travel at the shaft of the shock) is 65mm. 130mm is at the axle.

Right but when measuring to set my sag based on my weight, 130mm 5.1in is what ill need to take into account?
or 65mm?

[yorkie_chris]

No, nothing like that.
65mm is absolute between top out and bottom out in shock.

All you care about is relative movement between swingarm and tailpiece (or arbitrary point).


To measure;
Unload suspension (abba stand, push bike over on sidestand, whatever... fully top out the suspension)
Measure between an arbitrary point (bit of tape on tail plastics) and point on swingarm near axle end.
This is measurement A

Then get bike on it's wheels, just supporting it's of weight.
Measure again to same point. Difference between this and A is the BIKE sag.

Get on the bike, measure again.
Difference between this and A is total or rider sag.

Ah, you're trying to use some rule-of-thumb formula for setting sag?
Just set it somewhere around 25-30mm rear, 35-40mm front (with you on the bike) to start with. There is no magic formula, you'lll need to fiddle with it to find what works for you and your bike where you ride.

Cool thanks guys. Top out doesn't mean taking the spring to its maximum setting or zero pre load. Forgive me if my terminology is misunderstood. But just making sure there is no free movment when raising the rear tail up? is that right? Then you set your sag.

[yorkie_chris]

Top out is when the piston inside shock is against the top out bumper... i.e when the length of the shock is at its max possible.

This can happen when you lift the tail of the bike in the air... or it can happen if you wind the preload up so high that the bike is still "topped out" even with its own weight on it.

It's the furthest you can move the tail from the axle, without changing any settings, as though you were lifting the bike in the air by its subframe. I think that's what you mean by "no free movement"?

Originally Posted by GrahamB

It's the furthest you can move the tail from the axle, without changing any settings, as though you were lifting the bike in the air by its subframe. I think that's what you mean by "no free movement"?

Yeah that's what mean. Brilliant perhaps now i can get the settings right
Thanks all.