F800gs and Hyperpro review

Discussion in 'Parallel Universe' started by NAZDirt, Nov 21, 2009.

  1. NAZDirt

    NAZDirt Been here awhile

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    I purchased my GS a few months ago and was horribly disappointed from day one. I had hoped the suspension would have been more, well, dirt worthy. Keeping in mind the bike is tuned for a 185 lb rider I know the suspension would be a little soft for my weight but holy crap was it bad. I was easily able to bottom the forks and was having hard time on road just getting it into a corner without counter steering and hanging from the bar ends.
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    I decided to start with new springs. I found a set of Hyperpro progressive fork springs with a matching shock spring. For $286 shipped to my door I had a set from EPM Performance-http://www.wilbersusa.com/hyperpro-springs.htm Klause there was great helping me out. The rate of the new spring is ~.64-.78 vs the stock .48. I do not know what the rear spring is but I need no preload now. Installations was easy, directions thorough.
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    My only concern was the length of the Hyperpros being 5mm shorter than stock. Installed the ride height was same. The Hyperpros were a bit soft in the first 2” travel so I decided to add some preload to get into the firmer rate sooner and keep the right amount of sag. After some advice and material from Cisco I decided to use the old spring to add preload. I added 1.25” of old spring on top of the spacer after some trial and error. I could have had Cisco machine down some pipe to the right diameter and lengthen the stock spacer but wanted to get out riding. If you go this route you need 40mmX3mm tubing in whatever length works for you. No coil binding after measurement for you nay sayers.
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    My first impression was scarry! It now rides like a dirt bike. It easily enters corners with a slight lean yet hold a good line all the way through. No high speed wobble. It maintains road contact great. The front does ride slightly higher in the stroke but not enough to skip a pothole. The best news is no more diving when braking.
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    The dirt impression was just what I wanted. It now will handle all the bumps and jumps without bottoming. It maintains great contact, no skating. The rear needed no preload and still keeps great contact. The only bad part was going waaay to fast for a 400lb dirtbike. I found myself going too fast since the suspension was set up correctly.
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    All in all I would highly recommend upgrading the springs if you have a little bit of cash. I’m sure it would be better yet for a new fork cartridge and rear shock but I didn’t have $2000. If you could only afford the front I would highly suggest it. I found EPM had parts for a lot less than Touratechgucchi.
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    Happy riding.
    #1
  2. Firefight911

    Firefight911 Been here awhile

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    I have great vision and could barely read that in black font! OY!!!:wave:thumb

    #2
  3. NAZDirt

    NAZDirt Been here awhile

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    Sorry bout that. Cut n paste don't do to hot from work.
    #3
  4. EnderTheX

    EnderTheX Dirt Rider

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    The F8 I bought already had the hyperpro progressive springs and heavier fork oil so I am unable to compare it to stock lol. :lol3. I like it though!!!
    #4
  5. JBruyet

    JBruyet Mountain chaser

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    I too did the Hyperpro upgrade (fork springs & oil and rear shock spring) and was very pleased with the result. I'm not a backroad blaster but I have taken it through some seriously rutted roads and it's much smoother than I thought it would be. In fact, I do a little curb hopping and the front wheel impact has really lightened up too. This upgrade works for me!

    Joe B
    #5
  6. itsatdm

    itsatdm Long timer

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    Before I did the Bitubo inserts route, I did exactly as you did, including using the old springs as a spacer. Same initial findings, with the same happy results. That is until I tried sand and loose gravel. The front did not want to grip in the loose stuff and a couple of speed wobbles in the silt beds convinced me that Hyperpro may have a reason for the shorter springs with the original spacers and went back to them.
    #6
  7. Bayner

    Bayner Long timer

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    Could someone be kind enough to post up the part number for the rear spring you're all using? Thanks!!
    #7
  8. The Griz

    The Griz Long timer

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    Yeah, good call. I think I'm actually going to get the standard height front and rear Hyperpro Spring Kit now. The only thing is, I want the rear Hyperpro spring to be black, and not Easter purple!!:lol3 Hey tmex (and others who have the black spring), how did you go about getting it in black? Did they stock it in black?

    On a side note, this is great news guys! I'm really excited to get these springs now!
    #8
  9. itsatdm

    itsatdm Long timer

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    I can't find the spring on any of the Hyperpro websites. Per the spring, it is a #1320. To my knowledge this is the most commonly one used, though there is apparently is a HD version for giants. Keep in mind this is a variable rate spring, so it covers a wider range of rider weight. As it compresses the rate increases. It does come in black, I have one.
    Claus ? who used to have sole rights to Hyperpro USA was who I dealt with, but I can't remember what name he is using for the business.
    #9
  10. Y E T I

    Y E T I Unpossible

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    I'm ordering mine right now. Just let Klause know you want black instead of purple. He said I should have mine by the end of next week. :clap
    #10
  11. EnderTheX

    EnderTheX Dirt Rider

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    Isn't the purple one the lowered spring? Sorry I am too lazy to research but that is what I heard.
    #11
  12. itsatdm

    itsatdm Long timer

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    The reg spring comes in purple or black.
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  13. NAZDirt

    NAZDirt Been here awhile

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    EPM Performance is the company. Klause is the fella to talk to. I warned him there will be other inmates coming.

    >>http://www.wilbersusa.com/hyperpro-springs.htm

    I have the HD fork springs and shock spring. They can come solo or as a kit.

    HD front SP-BM08-SSA017
    HD rear SP-BM08-SSB017
    HD Kit SP-BM08-SSC017

    The standard spring set that is slightly stiffer than stock but not heavy duty is the p/n has 009 for last digits in above series.

    The lowered spring kits have last 3 digits that are 010 and 011. They are lower than stock but still stiffer.

    The standard set is the same sold by Touratech for $50 more than from EPM Performance. I do not think Touratech offers the rears.

    You can order the springs in black as well. I figured if purple upsets anyone they are not getting the bike dirty enough to cover it up. He did not have it in stock when I order a few weeks ago and I was too hurried to wait.

    Happy riding.
    #13
  14. The Griz

    The Griz Long timer

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    Just talked to Klaus at EPM Performance Imports. What an awesome guy!!:thumb

    He said since I weigh 185 lbs and don't have the Touratech oversize gas tank on my F800GS that the regular Hyperpro progressive springs would be perfect. I proceeded to tell him all of my complaints about the font end suspension on this bike, and he said that in his experience these Hyperpro springs and oil are a big improvement on the F800GS. Even on the smaller hard-edged bumps.

    I'm ordering them from him tonight, I'll report back when installed and tested.

    Also, I decided to hold off on the rear Hyperpro spring. My BMW dealer said it would be $235 to install the front springs, and above $300 to put the rear spring on!!!:huh I might as well just buy a whole new rear shock and put it in myself for that price of labor!! And i'm too much of a wuss to deal with a spring compression tool to put it on myself, soooo..... just the front springs for now.
    #14
  15. NAZDirt

    NAZDirt Been here awhile

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    Just drive out here. Ill do the work for a bottle of Makers Mark. That is insane for how easy the job is.

    #15
  16. Y E T I

    Y E T I Unpossible

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    Griz, do it yourself. (The forks that is.) They're simple. For the shock, remove the shock yourself and take it to the dealer to do just the replacement of the spring. You'll probably save close to $400 that way. That's half way to a steering damper!! :clap
    #16
  17. bxr140

    bxr140 Flame Bait

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    Or take it to a sport bike suspension shop and get it done for half of whathe dealer wants.
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  18. The Griz

    The Griz Long timer

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    Thanks, fellas, for the encouragement. I'll do the front springs myself. Those of you who have paid to have the Hyperpro rear spring put on... how much? tmex?
    #18
  19. itsatdm

    itsatdm Long timer

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    Griz, taking the rear spring out is really no big deal. Get the rear wheel off the ground and remove the rear wheel. Take off the cover over the top of the spring, the chain guard and you have access to the spring. Remove the top and bottom shock bolts, they are probably bent anyway. :rofl Wiggle the shock out. The Hydraulic preload is held onto the top of the shock with a set screw, loosen it and it all slips off. Looks like any other shock at that point.
    I could not find or rent a spring compresser that fit where I live and the only dealer in town would not do it because it came off a BMW:eek1. If you have a dirt bike shop near you, its a 15 minute job to switch the spring.
    If you have too, you can even make your own compressor with 4 6" bolts and 4 pieces of agle iron, but probably not worth the effort if someone else will do it.
    #19
  20. NAZDirt

    NAZDirt Been here awhile

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    The set screw only holds the preload adjuster in its rotational position. The screw has no mechanical load against the spring. There is actually a clip on the shock body that cannot bee seen until the preload adjuster is slid down 1/4 ". Once the clip is removed the adjuster slides up the shock body and off.

    Beware of the angle iron compressor. I'll post pix later. Darwin award style.
    #20