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Help with valving setup KTM

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2007 KTM 250SXF

CC forks

375 cc of oil

.50 springs for a 2008 CC fork (cut new spring seat snap ring groves for longer springs) 2007 springs where hard to get at the time.

215 lb rider B class on my good days:lol:

Forks feel harsh in small rocks and chop. I get a numb feeling in my wrist if I ride rought trails to long. Feels good every where else. Useing most for the travel on most trails. Useing all of it on the MX track.

I just want to get a plusher feeling at the start of the stroke. It does everything else vary well. What would you change??

This is my first time doing a revalve, so if I'm missing something, yell at me:bonk: its how I learn.

BV

24x.1 (7)

14x.1

24x.15 (4)

22x.15

20x.15

18x.15

16x.15

14x.15

9.5x.3

16x.25

RB

20x.1 D (3)

13x.1

16x.1

14x.1

13x.1

12x.1

11x.3

16x.25

MV float .9mm

20x.1 (4)

18x.1

Edited by barcode
added MV float

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Replace all the .15 shims in the BV stack with .10's. Set oil level at 325cc. Try again.

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Replace all the .15 shims in the BV stack with .10's. Set oil level at 325cc. Try again.

to get a softer top of the stroke-you will need softer springs aswell

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to get a softer top of the stroke-you will need softer springs aswell

Good catch. If he weighs 215 w/o gear he will be in the 240 range with gear. So .46/.48 area would be better.

I probably have the shims you need and am 15 minutes away...

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4.8 N/mm springs

did you ditch the 11.20 as well or just the 2 x 20.10 ?

either way you increased the float substantially by .20 or .40 - bear this in mind with the soft LS compression you have (compared to standard).

I think, it's too soft there

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4.8 N/mm springs

did you ditch the 11.20 as well or just the 2 x 20.10 ?

either way you increased the float substantially by .20 or .40 - bear this in mind with the soft LS compression you have (compared to standard).

I think, it's too soft there

I got the bike used. Owner side he had them worked on. I've never been in the inner chamber.

When I got bike it had .44 springs and no oil from some crappy seals.

.44 with 380 cc but would still bottom out bad.

.48 with 375 cc would still bottom out.

.50 with 380 felt real good. Until I road a buddy's XC I thought my bike was great. XC had been worked on. Felt great in small chop.

Buddy said my bike felt like forks way to harsh in the first part of the stroke.

I will say with .48 it was a little better, but it would bottom out some times.

I'm sure if I can get just the first part of the stroke to feel better I'll be happy. Maybe I should have just droped the oil level 10 cc at a time till it felt good.

Thanks for the help guys. If I can't get the feel I'm after I'll just send it to KTM Lew or FTI.

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Good catch. If he weighs 215 w/o gear he will be in the 240 range with gear. So .46/.48 area would be better.

I probably have the shims you need and am 15 minutes away...

PM sent.

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When I got bike it had .44 springs

4.4 is standard

.48 with 375 cc would still bottom out.

you need 4.8

these springs fit you weight

if they are (still) bottoming, you have to mess with the setup (aka shims).

That's two different things to look for.

btw. the 12.15 is missing as well, which will help against bottoming (if it's in)

If I can't get the feel I'm after I'll just send it to KTM Lew or FTI.

👍

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Try 48s with reduced float (maybe .5) and remove 2 face shims from first stage of the BV. This will give the fork a more progressive feel in the midrange. The bike should turn better with 48s as well.

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