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Old Yesterday, 07:57 AM   #1
Hipster OP
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KTM 640 DiD Dirtstar Rim Question?

I'm thinking of replacing the stock front Behr rim on my 2007 640 Adv with a DiD Dirt Star 21 x 1.85 rim. To keep costs down, I want to re-use the stock hub and spokes.

They list the rim as compatible with KTM but, does anyone know for sure if I can re-use my stock hub and spokes with this rim?
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Old Yesterday, 08:27 AM   #2
davesupreme
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i'm about to do the same thing.... got the rim, gotta start doin' it....
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Old Yesterday, 08:52 AM   #3
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Dave, is the rim compatible with KTM stock hub and spokes?
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Old Yesterday, 08:55 AM   #4
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Quote:
Originally Posted by Hipster View Post
Dave, is the rim compatible with KTM stock hub and spokes?
I'm pretty sure if the spoke count on both rims is the same it will work...
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Old Yesterday, 09:11 AM   #5
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My concern is with the rim spoke hole size. I don't want to drill out the rim if the opening is too small or purchase larger diameter spokes that may not work with the stock KTM hub.
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Old Yesterday, 09:44 AM   #6
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i'll keep you up on it....

haven't checked the hole size, didn't really think of that one... the one i got is a 36 hole DirtStar.... got it on Amazon from PowerSportsWarehouse for $137 at my door....

everything looks copacetic, gonna give it a try, just ordered a 90/100-21 Maxxis Desert IT that i wanna try w/tubliss in our lovely fla. sand... i think it's gonna work good....

i dunno if i'm gonna take it apart this week or not... definitely next week.... wanna ride this weekend.....
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Old Yesterday, 09:51 AM   #7
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Tubliss require a 1.65 front rim.

A bigger concern than hole size which can be drilled is the hole angle...
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955616847 screwed with this post Yesterday at 11:16 AM Reason: in italics
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Old Yesterday, 09:54 AM   #8
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i'm runnin' a 2.50 in the rear, and it works fine....

i'm just a daredevil.....
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Old Yesterday, 10:46 AM   #9
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Wow, $137 was that for a black rim? I was going to order a 21 x 1.85 black rim from Dennis Kirk for $179 shipped, I'll have to check out Amazon.
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i'll keep you up on it....

haven't checked the hole size, didn't really think of that one... the one i got is a 36 hole DirtStar.... got it on Amazon from PowerSportsWarehouse for $137 at my door.
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Old Yesterday, 11:21 AM   #10
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i'm runnin' a 2.50 in the rear, and it works fine....

i'm just a daredevil.....
What exactly is there for me to deal with?
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Old Yesterday, 11:59 AM   #11
davesupreme
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Quote:
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Wow, $137 was that for a black rim? I was going to order a 21 x 1.85 black rim from Dennis Kirk for $179 shipped, I'll have to check out Amazon.
no, it's a silver one.... check it out.....

http://www.amazon.com/D-I-D-Dirt-Sta...-+21X185E6S01T

the shipping was a little wonky, didn't get a tracking number til' right at the end.... took a week by UPS, came fine in a factory DID heavy duty box.... sez they got one more....

i'm all good, just gotta string it up....
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Old Yesterday, 12:02 PM   #12
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Originally Posted by 955616847 View Post
What exactly is there for me to deal with?
they say you're supposed to run a 2.15" rear.... i talked some to Jeff, and all that's just lawyerspeak....

if you're running a heavy bead tire, it's not so important, i think.... mine's runnin' a Maxxis SI 120-18, and absolutely no problems at 5psi....
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Old Yesterday, 01:39 PM   #13
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Clearly no clue that I was being sarcastic.

Jeff would not have told you that was okay.
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Old Yesterday, 01:49 PM   #14
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you funny.....
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Old Yesterday, 04:53 PM   #15
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It appears the rim won't work without modification due to the Japanese angle pattern holes according to a Orange Crush thread;

"For the record, the DID Dirtstar 21X185E6B01T wont fit a 950/990, despite what all the online fitment guides say. Woodys hooked me up and was able to countersink/redrill it so I could still use it" Here's the thread http://www.advrider.com/forums/showthread.php?t=941903

I'll probably buy the KTM version of the DiD Dirtstar rim that's used on the 950 SE for $240.
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