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  1. #1
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    429 Carbon- 100mm or 120mm Fork?

    Talk to me about the 100mm vs 120mm forks. What are the handling differences? The bike was designed for a 100mm but can run a 120mm?

  2. #2
    Long Live the Gorn!
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    Bike ride greats with 120mm, not sure why anyone would ride a 100 unless you really are trying to minimize weight, flatten the bike or have a bunch of super super tight switch back that you would lose a paid for race on..maybe you do Although says designed for 100 - 125mm note that all bikes are spec'd with a 120mm and I have yet see a 100mm on it although thought I saw someone here with one. To me it rides quick and responsive with the 120 and is great on the descents... can I ask what are may be trying to solve by going 100?

  3. #3
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    I've got a Lefty at 110 and love it.

    I don't really notice much of a difference from the 100 it came with, but I'm not all that refined, I guess.
    www.teamnavycycling.org
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  4. #4
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    Quote Originally Posted by bvader View Post
    Bike ride greats with 120mm, not sure why anyone would ride a 100 unless you really are trying to minimize weight, flatten the bike or have a bunch of super super tight switch back that you would lose a paid for race on..maybe you do Although says designed for 100 - 125mm note that all bikes are spec'd with a 120mm and I have yet see a 100mm on it although thought I saw someone here with one. To me it rides quick and responsive with the 120 and is great on the descents... can I ask what are may be trying to solve by going 100?
    Wouldn't say I am trying to solve anything. My last ride had a 70 Head angle. I don't really want a bike that is vastly different. I guess I have no way of trying both so just looking for opinions.

  5. #5
    Long Live the Gorn!
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    Quote Originally Posted by Killrop View Post
    Wouldn't say I am trying to solve anything. My last ride had a 70 Head angle. I don't really want a bike that is vastly different. I guess I have no way of trying both so just looking for opinions.
    Ahh I see... interesting the 100mm HA is 70.3 and 120 69.3...so your current ride is in the middle but closest to 100mm.... however depending on your desired top tube length you could also adjust the stem length for a quicker response (I have put on a 70 and 90 to feel the difference and could tell the difference) . The 120mm should feel a bit more stable on the descents / steeps / chunky if that is desired.

  6. #6
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    So I was thinking about this post on my ride today ...really...(sorry hope I didn't come across like a terd, I really like this bike and for me I was looking *for* the 69 deg HA & 120mm) . anyways a varied ride, climbing, trail and descent complete with 1-2 ft drops at some rocks at speed. I was thinking that the bike rides great but yes in the series of pretty tight S-turns (including stacked 180 turns) which there are 2 sections I need to be aggressive and lean the bike over pretty good/far to keep tight in the turns...but I could keep them in. All the 29ers I rode I had to really lean into those turns..Where I think the 120 excels is on the descents (duh) but here is what I mean, I can ride in a more neutral or aggressive posture (weight mid .. or even a bit forward) so I can carve, transition, and really attack and the bike rides great very predictable.... I enjoy that. I have an Spec SS with 90mm fork and 71.5 and I can ride all this too, but I don't feel that the quickness (what little there is ) outweighs the overall trail capabilities, which is what I was looking for.

    You may be looking for more overall XC feel...the difference in HA and WB seem pretty small..but they may be noticeable to you especially if you area really used to that feel.

    120mm does *not* feel "slack" nor like a truck....hope that make sense, I would say get out and demo one if you can.

  7. #7
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    i dont know if it's only psychological, but coming from spez camber 29er with 100mm/100mm travel, and now riding 429c with 120mm/100mm travel, i feel more comfortable and confident on the descends that im already used to with the former...

  8. #8
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    120mm up front will bring the bike to life on the down slopes but it will not hurt you on the climbs.
    ...and proud member of the anti-sock puppet desolation

  9. #9
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    429 Carbon- 100mm or 120mm Fork?

    120 all the way. It transformed my 429 on the downhills, and I still go up just as fast as before. Get a talus if you want the best of both worlds, though there is a bit more stiction

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