How do I install the Race Tech shock spring?
  • JerkyChew
    Posts: 20
    Joined: Thu Jun 22, 2006 4:38 pm

    How do I install the Race Tech shock spring?

    by JerkyChew » Sat Apr 13, 2019 11:45 am

    I bought the Race Tech shock spring from CRF's Only store, and it included the spring collars required for installation. However I have no idea where the collars go - I assume one goes on top and one on bottom, but how do I know which is which? There weren't any instructions included and I can't find anything online. Here's a pic of the new spring, original shock, and collars:

    Image
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    JimDirt
    Posts: 3660
    Joined: Sat Nov 25, 2006 6:31 pm

    Re: How do I install the Race Tech shock spring?

    by JimDirt » Tue Apr 16, 2019 10:10 am

    It looks like you just undo the collar , remove it , add the one insert to the bottom , then add the other to the top and replace the collar and that should be it , it does not look like that shock requires a spring compressor , so it should be simple and straightforward

    The reason for the collar is because of the difference in diameter of the Race Tech spring
    02 CRF450R
    06 CRF450X
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    Weiser , Idaho
  • littlebikebigcat
    Posts: 1
    Joined: Sat May 02, 2020 7:27 am

    Re: How do I install the Race Tech shock spring?

    by littlebikebigcat » Sat May 02, 2020 8:09 am

    Just did this last night... Have to say it was slightly disappointing not getting any instructions or manual at all given the stock shock is a strange setup and there is hardly any information online about the process. So for those who are in the same position here is a quick run down of install. Remove shock from bike this is very easy there is plenty of videos online if you need help with this part. Next is compressing the old spring enough to reach the 23mm nut on the bottom of the shock rod. The rubber piece on the bottom slides up and out of the way. Once this is reached stick at screw driver in the bottom bracket with your wrench on the nut and spin bracket off. Release spring compressor and slide old spring off. Install the larger collar first slide the flat side facing the preload collar. Slide new spring on. I used a shop towel to protect the new spring when compressing. You must compress a good bit more than getting the stock spring off as the new collars take up quite a bit of space. Once compressed enough put the bottom collar back together now with an extra spacer on it and stick your wrench on the nut again and spin the bottom bracket back on as far as possible. Release spring compressor and install shock back onto bike. Easy enough process but the new spring collars really make it a pain to get enough room for your wrench to fit back on the nut to spin the bottom back on. Very stiff now haven't ridden it much yet but feels good so far. I got the 12.5kg spring even though I only weigh 145lbs I figured adding additional 40-60lbs of gear on to the back will make it just about perfect when loaded.
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    JimDirt
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    Re: How do I install the Race Tech shock spring?

    by JimDirt » Sat May 02, 2020 8:37 am

    Welcome to the site !! \:D/



    Good write up , and first post =DD , and yea , most people forget when riding off-road that the extra weight of a backpack is the same as you physically weighing more when selecting a spring rate .... ;)

    And I have yet messed with a 250L or Rally suspension .... So I was unaware it needed a compressor , I just figured you could unscrew the nut and slide the spring off and install the new one and snug the collar down again .....
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho
  • Aussiecrf230
    Posts: 1671
    Joined: Fri Jan 06, 2006 11:11 pm

    Re: How do I install the Race Tech shock spring?

    by Aussiecrf230 » Sat May 02, 2020 4:34 pm

    Looking at the shock wouldn't you just loosen the jam nuts at the top (whilst still on bike), then unwind jam nuts remove spring over the top mount. replacement is reversal of procedure.

    You would normally have to readjust the sag so removing the jam nuts isn't an issue as have to redo anyway.

    This is how I have done before that way you can leave shock on bike and only undo the top mount once jam nuts are loosened.

    Or am I missing something with this shock. Are the thread tops below shock body so can't unscrew over top?
    Ray
    Australia

    CRF230F 2004
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    JimDirt
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    Joined: Sat Nov 25, 2006 6:31 pm

    Re: How do I install the Race Tech shock spring?

    by JimDirt » Sat May 02, 2020 7:31 pm

    That is what I would have thought as well , but from what I am understanding , the Race Tech spring requires those large collars and you can't just put the spring on and screw it down , there is no threads showing ...... my buddy I ride with has a 2018 RMZ450 , he resprung it for his weight (he weighs about 150 so needed lighter springs than stock) , so he got the Race Tech spring , and had the same issue , he had to compress the spring in order to even get the adjuster to start threading because of the collar thickness .... I guess they do this so they do not have to make springs for each specific bike , they just make X size , then make you use the collars , which then makes the compressing issue necessary ... :-k :-~
    02 CRF450R
    06 CRF450X
    Image
    Weiser , Idaho

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