KTM 640: Alternative front rim solution!!

Discussion in 'Thumpers' started by fasteddy, Sep 24, 2007.

  1. fasteddy

    fasteddy Been here awhile

    Joined:
    Sep 8, 2002
    Oddometer:
    335
    Location:
    Southern Ontario, Canada ( Niagara Peninsula )
    Most all of us know by now that the stock front Behr rim on the 2004 & up 640 Adventure is made of putty. I figured that before it failed completely I would take the opportunity and get myself a set of excels front and back. An e-mail to Woody, a transfer of funds and presto problem solved.

    <img src="http://www.snapdrive.net/files/476627/2006%20KTM-2.jpg" alt="2006 KTM-2.jpg" />

    My plan was to use the new Excels exclusively offroad and clad the stock rims with more streetable tires. I went through 6 rear knobbies last year and with this setup I could minimize the use of knobbies on the pavement. Unfortunately it became apparent very quickly that the stock bent behr rim was just to far gone.

    <img src="http://www.snapdrive.net/files/476627/bentbehr.jpg" alt="bentbehr.jpg" />

    I almost ordered another Behr rim, then got to thinking why replace that piece of crap with more crap. Another Excel would be great but maybe I could cut the cost a bit with another solution. Using the OEM parts finder at www.ktm-parts.com I started to compare part numbers, specifically spoke sets and found to my surprise that the front Dirt Star rim on the 950 Super Enduro would lace right up using my existing spokes. I ordered the rim. KTM Part: FRONT RIM 1,85X21"DIRT STAR 06, Part # 6300907000030 and to my good fortune it wasn't backordered!! A buddy laced it up for $40.00 and now I have a new wheel for street use. I have a feeling that this wheel will also handle offroad duties if called upon.

    <img src="http://www.snapdrive.net/files/476627/dirtstar.jpg" alt="dirtstar.jpg" />

    Here's my 640 clad in street rubber!! Note the new Renazco seat as well!!:clap :clap

    <img src="http://www.snapdrive.net/files/476627/streetwheels.jpg" alt="streetwheels.jpg" />
    #1
  2. bmwktmbill

    bmwktmbill Traveler

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    5,658
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    Traveler
    Nice work, nice bike.
    b.
    #2
  3. alpiv

    alpiv Sr. nOOb

    Joined:
    Dec 1, 2004
    Oddometer:
    2,183
    Location:
    Indianapolis, IN
    Your 450's front wheel would have worked as well.
    #3
  4. fasteddy

    fasteddy Been here awhile

    Joined:
    Sep 8, 2002
    Oddometer:
    335
    Location:
    Southern Ontario, Canada ( Niagara Peninsula )

    The idea was to do this a little cheaper, although the spoke pattern on the rim on my 250/350 ( a 250 exc with KTM's 350 Hard Parts kit) is the same as the 640 the spokes are different, much thinnier in diameter. It would have mean't drilling out the rim spoke holes to allow the original spokes to fit. I also wanted a bit of a wider rim for road work and the 1.85 size of the dirt star rim was a good compromise when compared to the extra wide stock rim and a 1.60 Excel.


    Ed..
    #4
  5. rob748

    rob748 resident alien !!!!

    Joined:
    Jan 17, 2005
    Oddometer:
    825
    Location:
    traveling somewhere :)
    so what year KTM front wheel will fit a 640 05'06'07 front wheel ?
    #5
  6. rob748

    rob748 resident alien !!!!

    Joined:
    Jan 17, 2005
    Oddometer:
    825
    Location:
    traveling somewhere :)
    what front tyre is that ?
    #6
  7. fasteddy

    fasteddy Been here awhile

    Joined:
    Sep 8, 2002
    Oddometer:
    335
    Location:
    Southern Ontario, Canada ( Niagara Peninsula )
    Kenda 270


    Ed...
    #7
  8. rufus115

    rufus115 Thunder on African Roads

    Joined:
    Jun 27, 2007
    Oddometer:
    118
    Location:
    RSA
    dumb ass question....your bike is shown with various front wheels but all single disc, the banged up front wheel has twin discs...what gives?
    #8
  9. Strombony

    Strombony Been here awhile

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    Dec 16, 2004
    Oddometer:
    445
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    parma oHIo
    fasteddy, nice job!
    what fork protectors are you using for the high fender?
    i'm trying to figure out what to use on my 06.

    thanks
    #9
  10. fasteddy

    fasteddy Been here awhile

    Joined:
    Sep 8, 2002
    Oddometer:
    335
    Location:
    Southern Ontario, Canada ( Niagara Peninsula )
    Only pic I had of the wheel was before I removed the one disc (common mod for the 04 and on 640"s) Actually I've used that disk on the spare wheel!

    Ed..
    #10
  11. fasteddy

    fasteddy Been here awhile

    Joined:
    Sep 8, 2002
    Oddometer:
    335
    Location:
    Southern Ontario, Canada ( Niagara Peninsula )

    Those are off of a KTM 85 SX Part # 4700109400030


    Ed..
    #11