125-200cc 2009 WR165 Sag?

Im trying to figure out how to set this bike up, I need to know what is a good baseline to shoot for when setting my sag to decide if I need a new spring.

Thank you

So according to that formula, I found the Bike specs saying that my rear wheel travel is 11.6 inches or 294.64 mm So X would 294.64? So rider sag would be 100.17 mm +/- 3%

Am I barking up the right tree here?

Thanks again

No need to overthink it.

Put bike on lift so that rear is off the deck.
Measure from axle nut to a market point on rear of side panel vertically above axle nut.
Mark a point with a black pen.
Measure form axle nut to that mark(total travel, take that size ie, 600mm.)
Take bike off stand and push rear down and let it settle back (take that measurement, ie 570mm(static sag)
Sit on bike with normal riding gear that you'd wear and get someone to measure from axle nut to that first black mark ie, 500(rider/race sag)

So that's 600 with 30 static sag and overall 100mm of sag(ideal for most bikes but get specific for yours) ..

You want to aim for correct rider/race sag and if it's correct but static is 50mm, spring is too hard and if it's 20mm it's too soft and you need harder.

Race tech has a good site for it but not sure if they have a thing for husky settings.

Best money spent on a bike (IMHO) is getting it done properly/professionally .
You'll go faster easier. The bike will feel better and easier to ride.


DISCLAIMER, THIS IS INFO IVE PICKED UP FROM TUNERS AND TINKERING, I AM NOT A PRO.

Yes, except you probably have too many significant digits. You're shooting for about 100 mm, maybe +/- 5 mm. Depending on where/what you ride and your riding style/preference, you might want a bit more or less.

Measure the static sag (bike weight only) after you set the race sag, that will tell you if the spring rate is in the ballpark or not.

Great info, Anybody Care to explain how I deal with the front? (MEASURE AND ADJUST)

Thanks again

I use one of my daughters hair bands.
Cut it. Tie around fork Stantion , lift bike, push it up against the seal and let bike down.

Get on bike with all gear as normal and when I get off, I measure the distance from hair band to seal.

Afaicr, 20mm or so static, I just go by how bike squats when I jump up and down on pegs,with front brake pulled, if it goes down evenly, it's usually close, if front doesn't move, it'll be too heavily sprung.(I normally find fronts are 1 rate too heavy over stock rear.

The preload is simple to adjust on these forks. There is a thread on it here somewhere, but I wasn't able to find it. The previous owner of my 09 is 20 lbs heavier, and the forks were too stiff (although perfect for the MX track). Moving the retainer one notch worked perfect for me.

IMO, these are the best forks I've ever used, and I'd like to find a set for my CR.