Fork Springs for LC4 Adv.

Discussion in 'Thumpers' started by Doc_Busa, Jan 15, 2005.

  1. Doc_Busa

    Doc_Busa Been here awhile

    Joined:
    Sep 21, 2003
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    Tucson, AZ
    I was wondering if you guys have any recommendations on fork springs for the KTM Adv? I put Eibach's in the my old LC4, and it was a HUGE improvement. Just curious if you have any thoughts on a set for hauling a 270 lb rider plus some gear?

    Thanks :thumb
    #1
  2. Buckster

    Buckster Banned

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    Jul 23, 2004
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    Check your WP importer, they will give the correct spring rates, I would go for linear springs rather than progressive, otherwise you lose off road ability, also upgrade the rear spring to suit.
    #2
  3. Jerome

    Jerome Been here awhile

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    Dec 23, 2001
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    London, England
    I was offered the Dakar fork and rear springs to replace my originals which were shagged.

    I'm afraid i cant remember the specs for the front ones but the rear (have you sorted this already?) was a 260 / 75-95 progressive one so it's way harder than the standard 260/70 and might work for you.

    If it's any interest both are in Sao Paulo, Brazil at the KTM importer. Tel: +55-11-30826577. E-Mail: ktm@ktm.com.br

    The owner, Waldyr, speaks fluent English and is very knowledgeable.
    #3
  4. Mack

    Mack Gone, but never forgotten. RIP, Mack...

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    #4
  5. Scoot Jockey

    Scoot Jockey BST Faithful

    Joined:
    Feb 16, 2004
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    I weigh about 250lbs and switched last fall from the stock 4.4 WP springs to the 4.8 springs. I was a bit nervous in making this decision, in thinking that this spring rate may be too stiff, but it worked out great! It no longer feels like I am going over the handlebars when I make a quick stop, and still feels great doing 80+ mph over desert roads. I believe that 4.8 is the stock spring rate for the 950 and also the 660 rallye bikes. At 270lbs I would recommend doing the switch, and also swap out the rear spring to the 75/260 or 80/260. the preload then needs to be adjusted to within the specs stated in your WP booklets that came with your bike. When adjusting the preload on my front springs, I found that WP or KTM had more shims in one side than they did in the other, so one side had about 1/8" more preload! Not a huge deal, just kinda strange. With the new springs, I was able to adjust the preload on both front and rear, so that I am still within the adjustment range, whether it is just me riding, or me and 100 lbs of luggage. :D

    Enjoy
    Scoot Jockey
    #5
  6. meat popsicle

    meat popsicle Ignostic

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    Couple of questions for y'all, if I am 200lbs, then standard gear should put me between there and 250; adventure gear should put me up around 300. What do I, when I have the money..., set for? It sounds like scoot jockey is fine with his springs over a 100lb range. I guess this is something that the shops will know.

    Also, Buckster, what's the problem with progressive springs off-road? It almost sounded like Jerome was given a Rallye spring which he said was progressive? :dunno

    Maybe there is a chart somewhere that shows what weight range would work with what shock/fork spring setups? I guess that would be bike dependant as well but we do have the front/rear weights for the LC4s around here somewhere.
    #6