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  1. #1
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    120mm fork on Kona Unit

    Anyone try longer travel forks on the Unit frame? I can get a used frame for cheap and happen to have 120mm suspension forks sitting around for a quick and easy build.

    Did some searching but only found a few discussions in the SS forum.

    Just wondering if the result is a mini-Honzo with slightly slacker geo than what their specs show with the stock rigid fork. Looks like chain stays will be a bit longer.

    I know Kona recommends an 80-100mm fork on this frame, but I don't really need another 100mm travel bike. Anyway, would appreciate any feedback from those who have experimented with this.
    Last edited by kickhorse; 10-22-2014 at 08:36 PM.

  2. #2
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    the unit has perfect geo, which is why it has gone unchanged for years now. a 120 fork would throw off the perfect geo. a 100mm fork would keep it almost perfect. almost perfect because a unit is absolutely perfect with the rigid fork that it comes with.

    good luck!

    rog

  3. #3
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    Thanks Rog. It's just in my nature to mess with perfect!

  4. #4
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    Quote Originally Posted by kickhorse View Post
    Thanks Rog. It's just in my nature to mess with perfect!
    i know, i been dealing with you fiddlers, tinkerers, and over thinkers as a shop manager for eons. IT'S JUST A FVCKING BIKE!!!!!KEEP IT SIMPLE!!!!LEAVE IT ALONE!!!!!



    it's all good, mang

    rog

  5. #5
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    Do it and see. I'm thinking of 120's for mine.
    Last edited by NordieBoy; 12-20-2014 at 12:27 AM.

  6. #6
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    Well I've picked up some manitou towers @120mm for my 2014 unit

    They are tapered too, so I've had to buy a cane creek external bottom headset cup with a 12 mm stack height !

    To try and offset this ive ordered some spacers to lower the fork down to 100 mm

    I'll post up some pics and a review once its all arrived, I'm also weighting for some semi bath lube for the forks

  7. #7
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    My buddy has a 2014 unit and he runs a 120mm fork and absolutely loves it... I would say go for it.

  8. #8
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    Well still set at 120mm, had a quick spin about and it feels really nice loving the forks
    will try em at 100 when the spacers arrive
    Just need a longer brake hose !


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  9. #9
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    Did 20k at llandegla today conditions varied from a bit slidey to crap loads of snow, so not easy to give a decent review of how it rode, maybe wandered a it on the climbs, but not too bad

    Forks themselves were great, loads of control, lockout useful

    Be nice to try it in conditions were I can really hammer it

    I'll try it lowered to 100mm But it felt pretty damn good wy 120mm

    120mm fork on Kona Unit-15932990018_eaa0f05b81_b.jpg

  10. #10
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    Could you please measure the bb height at 120mm?

  11. #11
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    320mm, thats an unweighted fork and with a 12mm lower headset cup instead of the integrated as it was a tapered steerer,

    be interested to know what the height was with the p2s as i never measured it

  12. #12
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    If my math is right, it should be around 308 mm with P2.

  13. #13
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    Just installed a set of Manitou Marvel Expert 100mm forks on my 2011 Unit.
    A to C increased from 465-510mm and the HTA angle went from 71-69.

    Not ridden in anger yet but could have potential...

  14. #14
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    Quote Originally Posted by NordieBoy View Post
    Just installed a set of Manitou Marvel Expert 100mm forks on my 2011 Unit.
    A to C increased from 465-510mm and the HTA angle went from 71-69.

    Not ridden in anger yet but could have potential...
    I had my 2014 Unit with 120mm towers, as it was a tapered fork i had to fit an external lower headset cup which added about 10 and a bitmm to the stack height

    steering felt fine and it soaked up the terrain

    I did feel i was pitched a bit too far back though, my saddle just felt too low relative to the bars

    reduced them down to 100mm and my positioning feels much better

  15. #15
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    120mm fork on Kona Unit

    Removed the spacers and the bars are 45mm below the seat. A little higher than usual, but should be no problem.
    Not going to chop the stem more until I find out what the handling is like on different terrains as I might drop it to 80mm and then the spacers would go back on.

  16. #16
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    I'm looking to put a 120 tapered fork on a 2013 Unit.

    I'm not quite clear on the headset situation. Can someone post a link to an example of what Cane Creek bottom cup I'd need to buy?

  17. #17
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    Quote Originally Posted by addATX View Post
    I'm looking to put a 120 tapered fork on a 2013 Unit.

    I'm not quite clear on the headset situation. Can someone post a link to an example of what Cane Creek bottom cup I'd need to buy?
    Is this what I need?
    Cane Creek 40 Series EC44/40 Bottom Cup > Components > Headsets and Spacers > Headsets | Jenson USA

  18. #18
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    120mm fork on Kona Unit

    Does sound like the right bit as the Unit specs say 40mm.

  19. #19
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    yeo i fitted a

    Cane Creek 40-Series EC44-40 Bottom Assembly
    Cane Creek 40-Series EC44-40 Bottom Assembly | Chain Reaction Cycles
    on my 2014 unit

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