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2005 crf450 revalve for my dad


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completely stock bike minus the SPI oil in both ends my dads 54 weighs 240lbs and he was complaining the that bike is harsh and jarring.

 

I don't want to totally old man the suspension because my youngest brother (16 years old 210lbs and rides at a decent pace) rides it as well (my dads usually occupied with his subaru powered 17" travel baja)

 

So id like to plush it up so he can ride for longer but not such a mush bucket that little brother will hate it.

 

I plan on using .49 fork springs

and a 6.0 shock spring

 

 

 

 

heres the stock stacks

 

BV

 

16 - 30.1 (s)

29.1

28.1

27.1

26.1

25.1

24.1

23.1

22.1

21.1

20.1

19.1

18.1 b

30.5 x 2 w

16.2 f

11.2 b

12.1

13.1

14.1

15.1

10 - 16.1

 

Rebound

2 - 20.1 (s)

18.1

12.1 s

16.1

15.1

14.1

13.1

12.1

11.2 b

3 - 16.3

17 x 2.5 w

 

mid comp

mv 6 - 20.1

mv 4 - 17.1

sc 8 x 2.25

below 9.5 x .2 b

below 2 - 10.2

 

 

shock comp

9 - 44.2

9 - 44.15

37.15

30.15 s

42.2

42.2

40.25

38.25

36.25

34.25

32.25

30.3

29.3

28.3

27.3

26.3

25.3

24.3

23.3

22.3 b

30.3 f

44.5 x 5.0 w

44.3

 

 

shock reb

2 - 40.2

25.1 s

40.3

38.3

36.3

34.3

32.3

31.3

30.3

29.3

28.3

27.3

26.3 b

30 x 3.0 w

 

comp adj

stk

2 - 18.3

2 - 15.3

2 - 10.3

2 - 9.2 b

 

 

any reccomendations on reshimming it?

 

i think ill need a beefier rebound stack at least in the shock because of the 6.0 spring

I revalved my 09crf450 with a kit from spi and i like how dave set it up for not much lsr but alot of hsr in the shock and my rebound clicker sits at like 15 clicks out.

id like to shoot for 15is clicks out on this bike.

 

im also considering one of those ligher hsc adjuster springs.

 

Thanks,

Aaron.

Edited by EnglertRacing
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Just add a 16 to the bottom of the base on the forks and run 5wt oil, the thicker spi adds dampening and is counter intuitive to what ur trying to achieve. Reb and mid are fine.

Add the rebound face shims on the shock and you should be good for a diy revalve.

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Just add a 16 to the bottom of the base on the forks and run 5wt oil, the thicker spi adds dampening and is counter intuitive to what ur trying to achieve. Reb and mid are fine.

Add the rebound face shims on the shock and you should be good for a diy revalve.

 

yeah but i think its vi isnt that high and it thins out a bit once warmed up

ummmmm i kinda went the opposite way on my brothers wr250 r it was a mush bucket,

and im thinking that changing to a 16 wont do too much...

and no rebound change with the .49 springs??

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