F800GS - RXV Shiver'ed Fork Conversion

Discussion in 'Parallel Universe' started by Gangplank, Jul 25, 2010.

  1. Bayner

    Bayner Long timer

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    Sorry, I don't know the answer to that one...
  2. cbleroy

    cbleroy Adventurer

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    Hi Bli 55,
    not sure what fork you're speaking about, some donor fork or a F8 Shivered fork?
  3. klimtachakka

    klimtachakka Adventurer

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    So I've been wanting to do the fork conversion for a couple of years, but did not want the downtime. Last week I saw something on ebay that I took a chance on. I have no idea what I bought, but they seem to be what I was looking for. Does anybody recognize the clickers and might know what kind of forks they are?
    There is only rebound damping in one leg, the other rebounds instantly. They have no adjusters on the bottom, just the regular hex bolt which I beleive is the standard one on the F8.

    Attached Files:

  4. Reaver

    Reaver How Did I Get Here?

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    What you have is compression damping on one leg, and rebound damping on the other. That explains the C on one and R on the other.

    I believe these are from a BMW G650 X-Country.
  5. Bli55

    Bli55 -

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    In particular, factory shiver forks.

    More generally, any 45 mm Marzocchi forks.

    Even more generally, any upside down forks with an open cartridge constriction...

    I just meant to ask about the procedure to determine fork travel, and that should be a universal method more or less.
  6. todd900ss

    todd900ss Been here awhile

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    Reaver is mostly correct and a wealth of F8 knowledge, but those are from the X Challenge. I don’t believe the X Country had adjustable forks.

    Someone early in this thread installed these in a F8. Believe was stated they worked better in the F8 than his X Challenge and was a improvement but suspension is a subjective subject.
    These will not require machining of your F8 lower forks to install. Should be drop in other than sorting what springs and possibly spacers to limit travel if needed.
    Probably not as good of a upgrade as a true Shiver but should be easier.
    If you try them please keep us updated how they work.

    I need to do something with mine, on the fence with Shiver conversion or Traxxion inserts.
  7. Reaver

    Reaver How Did I Get Here?

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    That's funny. I knew it was a G650X something and yes, the Country did not have adj forks. I worked on a bunch of both but I'm older now...
  8. klimtachakka

    klimtachakka Adventurer

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    They will definitely be tested, especiallly as they came already transfered to F8 legs. (see pic nbr 2)
  9. leepalevv

    leepalevv n00b

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    My standard forks are bent, they're at the menders. Found this thread searching for alternatives to swap to. Does anyone here know of anyone that would do this mod for me in Europe? There's plenty of marzocchi forks on ebay that could purchase but I'd rather leave the moding to a professional for the machining and revalving and set up. Anyone know anyone?
  10. Bli55

    Bli55 -

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    Since you are in Amsterdam...
    Contact Bas at Hyperpro (they have contact phone on the website), he is both local to you AND a genius about these conversions.
  11. cbleroy

    cbleroy Adventurer

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    Small return of experience :
    I made the HAT extreme in Sept and it was great even if very exhausting- barely no sleep during 40h of driving !
    The fork behaved very well, it was mounted with 0,64 springs, but I ended up feeling it is probably too hard.
    I'm just putting back the stock springs and removing one 0,1 mm shim in the stack, I'll see next year if I'm fully satisfied.

    BTW here a video of my HAT...a couple of nice scenery in the Italian Alps.
  12. hoffi812

    hoffi812 n00b

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    I need your guys help and there are clearly some f800gs fork specialists around. (mine is a 2009)

    I have a damaged front fork, but the tube is fine. Can I separate the inner tube from the control arm (lower part where the drive shaft and brakes are mounted)? Or do I have to replace the tube plus arm (that's the only thing that BMW offers and it is $700 .... :-( )
    The reason why i am asking is, I found a used fitting fork with a ding in the tube but a good control arm for about $150)

    I hope i can safe myself $500 here....


    Thanks
  13. Reaver

    Reaver How Did I Get Here?

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    In short, yes but I bet it'll cost $200 to do so.

    There is a pin somewhere in the lower arm (as you say). Some are split roll pins and some are a set screw on the Marzocchi's. I forget what ours are. Once that is out, you need to heat it up quite a bit to break the thread locker and unscrew it. I've never done this however I've seen it done on a video that I can't find right now.

    Not sure if I'd try it myself.
  14. Reaver

    Reaver How Did I Get Here?

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    See what's on yours for the pin. Looks like the inside of the part (circled).

    They may be pressed on or threaded. I see the G450X fork ends are pressed and pinned, not threaded. They are likely glued on with something as well to seal it.


    f8.jpg
  15. miotacztruskawek

    miotacztruskawek Adventurer

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    Marzocchi Shiver has a thread at the bottom of the fork tub and a securing screw. 20190516_201922[1].jpg At the bottom of the pipe you have pressed the sealing ring.
  16. miotacztruskawek

    miotacztruskawek Adventurer

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    And movies
    KTM


    and another
  17. Two VT Riders

    Two VT Riders likely lurking

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    Finally getting around to doing this for my F8. I picked up a pair a year ago - supposedly, these were Husq SM610.
    They are very similar overall length to the F8 OE (+/- 1/4in), and just a little more travel - 9.8 in. though I did not measure this, yet.
    Additionally, from what I find, the stock Husq. spring is a 0.50, and was the same length as the hyperpro progressive spring I found in my F8 forks.
    If anyone is still doing this, these seem like a perfect option.
    Dropping the lowers off to machinist soon!
  18. bikecat

    bikecat Long timer

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    Dear all,

    I came across this thread. I ride a BMW Megamoto. It comes with 45mm Marzzochis. I thought that I help by posting some info from the MM's manual on the adjustability of those stock MM forks:

    Manual fork adjustment.jpg

    Below is the pic of the fork as off the bike:

    Stock fork.jpg

    I am curious about one thing - there is an Ohlins kit FKA101 for the F800GS. Yes, a spendy option. The fact that the F800GS / Shiver / MM shares the same size forks (bar travel) - does it mean that the kit can be fitted to the Shiver and MM as well?

    This thread is very comprehensive - good job.