250/450 04-2014 shock/fork spring interchangable?
  • brownedoff
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    Joined: Thu May 08, 2014 12:51 pm

    250/450 04-2014 shock/fork spring interchangable?

    by brownedoff » Sun May 11, 2014 12:36 pm

    hi i recently purchased 07 crf250r my sag height is to low checking out spring was set up for a 10stone rider im 13.5stone without riding gear anyway apparently i need rear shock spring 53n and not sure on fork springs yet? any ideas ?

    are the springs inter changeable as i was going to buy secondhand from ebay or freinds at practice tracks ie what years 150 250 450 crfs will fir my rear shock and front forks ?

    then get my cheapy freind bike mechanic to fit them n service the suspension rather than paying £500 for spring s set up at local shop :)

    many thanks fellow crf ers
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    JimDirt
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    by JimDirt » Mon May 12, 2014 8:35 am

    08 and older 250/450 will fit , 09+ 250 (if they are Showa and not SFF)will fit , 09+ 450 will not fit
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
  • brownedoff
    Posts: 44
    Joined: Thu May 08, 2014 12:51 pm

    by brownedoff » Mon May 12, 2014 9:52 am

    So anything from 04 _ 08 250 450 suspension will fit shocks and forks ? And only 09 plus 250 if its showa is this forks and shocks ? Many thanks!
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    JimDirt
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    by JimDirt » Mon May 12, 2014 6:28 pm

    brownedoff wrote:So anything from 04 _ 08 250 450 suspension will fit shocks and forks ? And only 09 plus 250 if its showa is this forks and shocks ? Many thanks!


    Yes forks and shock , 09+ 450 is KYB which are different size springs
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
  • brownedoff
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    Joined: Thu May 08, 2014 12:51 pm

    by brownedoff » Wed May 14, 2014 2:49 am

    Thanks alot jim one more question are 5here any other makes of bike were the suspension will fit ie kawazaki yamaha suzuki you know of that will fit my bike as the rite size springs are quite hard ti find thanks
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    JimDirt
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    by JimDirt » Wed May 14, 2014 9:47 am

    You should need a 0.45kg fork spring and a 5.5kg shock for your weight , which are stock CRF450 springs , and should be very easy to come by (0.46 and 5.6 will also work)

    If none of your friends or no suspension places in your area have anything (they should have take offs from lots of bikes) then yes try EBay

    According to Race Techs chart , both Suzuki and Kawasaki (i used your year and 250F and your weight as a guide **your weight in lbs is 189**) will fit as well (they are all the same part numbers) , as long as its not from a KYB suspension and is Showa it should fit

    http://racetech.com/ChooseVehicle.aspx

    If your a faster track rider you can go all the way up to a 0.49 and 5.7

    If your a faster off roader you can still go to a stiffer spring but re-valve it softer (i use 0.52/5.6 ,but i weigh 210 lbs/15 stone so i am a little heavier than you ... and i will be 55 in August)

    Also if you ride off-road go 1 size stiffer to account for the added weight of a backpack ,etc , i weigh 235 lbs with all my off-road gear ,210 lbs without riding gear on
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
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    DarkCRF
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    by DarkCRF » Sun Apr 26, 2015 6:00 pm

    250 2010 have longuer spring
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    firegugg
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    by firegugg » Wed Jun 24, 2015 8:22 pm

    Jimdirt, as always (last 2 weeks for me) youre a life saver. I found out the rear spring is a 6.7. Waaaayyyyy to stiff for my weight (180 lbs) ive been looking on eBay and see 50mm 5.5 KG/mm , from a 2003 CRF 450R. Im pretty sure its a go but just wanted to confirm.
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    JimDirt
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    by JimDirt » Thu Jun 25, 2015 12:02 am

    Yes it will fit

    Suzuki springs will also fit (250/450)
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
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    JimDirt
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    by JimDirt » Thu Jun 25, 2015 12:03 am

    DarkCRF wrote:250 2010 have longuer spring


    I am assuming your referring to the fork springs correct ?? , shock should be the same
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho

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