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Anyone have a good stack for any 2004 Yamaha YZ/YZFs forks?

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I own a 2004 YZ450F and these forks are harsh, yet blow through the stroke. And I don't even know where to start to fix them. So anyone have a good stack that you can give me a good starting point? I'm 170 lbs and ride MX.

Heres the stock stack:

bv

24-0,11*6

22-0,15*1

20-0,15*1

18-0,15*1

16-0,15*1

13-0,15*1

11-0,25*1

plate

11-0,30*1

24-0,11*1

mid

16-0,11*1

20-0,40*1

27-0,11*4

20-0,11*1

16-0,11*1

14-0,30*3

25-0,40*1

6mm sc

reb

27-0,11*7

12-0,11*1

26-0,11*1

24-0,11*1

20-0,11*1

18-0,11*1

16-0,11*1

14-0,11*1

12-0,11*1

11-0,25*3

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buy some 06 forks is my best advice, honestly.

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sadly i'm just a teen working a part time job, so i got other priorities than to spend $300 on forks right now. but hopefully i got some 06+ forks later on this year. but until then I gotta make do with what I have.

so i was thinking about doing these changes...but i honestly have no idea...i need some help. what id like to do is get it to ride up in the stroke quite abit more and have it not blow through the stroke as much. and i think if i get it to ride up in the stroke alittle more, it won't be soo harsh because i feel the main reason its alittle harsh is because its down in the stroke too much.

bv

24-0,11*8 (from 6)

22-0,15*1

20-0,15*1

18-0,15*1

16-0,15*1

13-0,15*1

11-0,25*1

plate

11-0,30*1

24-0,11*1

mid

16-0,11*1(remove this)

20-0,40*1(remove this)

27-0,11*7 (from 4)

24-0,11*1(added)

22-0,11*1(added)

20-0,11*1

18-0,11*1(added)

16-0,11*1

14-0,30*3

25-0,40*1

6mm sc

reb

27-0,11*7

12-0,11*1

26-0,11*1

24-0,11*1

20-0,11*1

18-0,11*1

16-0,11*1

14-0,11*1

12-0,11*1

11-0,25*3

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If you want your fork to ride higher, lighten your reb stack and stiffen the com side. Don't touch those 16.11 and 20.4 shims in the mid stack. By adding or removing one shim on the mid will make a huge difference to fork performance.

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the reason they often do what you say is a leaking cv which is a valve at the top of the cart , it's not a part you can remove or replace easily

the changes you suggest will not help , none will if the cv leaks , do a search on thus subject as it has some good threads, the stack on the base is already very stiff , if you try to stiffen the mid it just warps the shims really fast

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Check spring preload. Those old forks has bad springs quality.

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the reason they often do what you say is a leaking cv which is a valve at the top of the cart , it's not a part you can remove or replace easily

the changes you suggest will not help , none will if the cv leaks , do a search on thus subject as it has some good threads, the stack on the base is already very stiff , if you try to stiffen the mid it just warps the shims really fast

Race Tech has a CV valve part that makes the CV leak-proof(i forgot what their terminology for the part was) for $30. Would that help forks alot?

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when i saw it, it added tons of stiction

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