09 yz 450 fork oil amount with smart per. mods! Little help

[fishkiller]

JUst like title says..replacing fluid in forks and have lost my build sheet that specd my oil amount! Woul dlove to hear from someone with same setup!!!

Full smart perf kit with there fluid. 190 lbs no gear. NEED HELP!!! Thanks.

[jwaseman]

fish,

I would start at around 325ml. with 215.vm2.k5 in the lower chamber. If your bottoming harshly, I would add 5 ml at a time until your happy.

James

[jlkfg]

If you have the Gen 2 DDT, you may need a lot to keep from bottoming. I had an 07, I was up at 380 and still bottoming, I'm 175 lbs. However, it is much easier to add fluid than remove.

Gen 2.5 fixed it for the most part. If you re-valve it, go to CJ Wai or Grayracer's stacks to bottom the inner spring and keep it from bottoming.

Edited February 13, 2012 by jlkfg

[jwaseman]

If you have the Gen 2 DDT, you may need a lot to keep from bottoming. I had an 07, I was up at 380 and still bottoming, I'm 175 lbs. However, it is much easier to add fluid than remove.

Gen 2.5 fixed it for the most part. If you re-valve it, go to CJ Wai or Grayracer's stacks to bottom the inner spring and keep it from bottoming.

You was up to 380 with 215.vm2.k5 spi5 wow!

[tpars121]

I'm a little heavier but at 212 lbs. (no gear) I run 320ml spi5 (.50 fork springs) full DDT setup. I also recommend tieing a rubber band around the lower fork tube to check your travel. For me it's hard to determine wether harshness is from bottoming or too much oil.

Edited February 13, 2012 by tparscrf250r

[fishkiller]

measured a bit over 300 out. Still alot of reisual left and slight spillage....

My 125 calls for 350. That is what I put back in. Will see how it goes...

What is the difference in the gen 2 versus the gen 2.5??

Is it worth me going back in and doing??

[grayracer513]

I answered this in the other forum you posted it in.

https://www.thumpertalk.com/topic/941437-fork-oil-amount-with-smart-perf-full-build-lost-spec-sheet/