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  1. #1
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    Stem Length - 2013 Stumpy FSR Comp 29

    I got my new 2013 STJ FSR Comp 29er (my first 29er) 3 months ago and overall I am thrilled with this ride, it climbs and pedals great. My only concern is that the bike feels sketchy on the steep descents. I think the problem is the long 110mm stem. I'm 6'0" and the size L Stumpy FSR fits great, but it also feels like I can't get into a wheelie / manual without way more pulling back and also like I can't shift back as well or as naturally as I used to do on my 26" bike on some steep pitches. I'm thinking that changing to a shorter stem would help with this. I'm no expert on bike fitting or geometry, but I know most of you are. Should I try a shorter stem and how short (I'm thinking 90mm)? Has anyone had this issue also? Any input will be greatly appreciated.

  2. #2
    Fat-tired Roadie
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    It's certainly worth a shot. If your stem's not already flipped up and at the top of the spacer stack, try that first. If you buy a new stem, try not to spend too much. Think new bike takeoff, used, or Nashbar.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  3. #3
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    If you shorten the stem, try swapping to wider bars too. i helps keep the cockpit from feeling cramped. On my Stumpy i started with a 75mm stem and 720 bars and now ride a 60mm stem and 750 bars. With the 720 bars and the 60mm stem the bike felt too compact. The wider bars will also help with stability on the downhill!
    2013 Stumpy Evo
    2014 Fatboy

  4. #4
    JCL
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    40mm stem and 800mm bars on mine.

  5. #5
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    What is the stock size? My medium seems to have a really short stem, I was thinking of getting a bit longer.

  6. #6
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    Stem Length - 2013 Stumpy FSR Comp 29

    Yep, go wide, start with 780/800, and adjust from there.

    800 trimmed down a bit totally changed the feel on my 2013 Stumpy FSR...

    mudhen
    "Lighten up Francis" Sgt. Hulka

  7. #7
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    Stem Length - 2013 Stumpy FSR Comp 29

    I went from the stock 75mm down to 50mm on my size medium. It has made a HUGE difference in the handling and my ability to lift the front wheel. Still running the 720mm bars though - there's too much trailside foliage to go wider around here

  8. #8
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    I just found out (after taking the actual measurement) that the bike came stock with a 90mm stem. For now, I will try with a shorter stem first and then see if I need to go with a wider bar. But that brings another question; shortening the stem also means that the bar height will be lower, should a new handlebar also have a taller rise? The one that I have is 720mm with only a 10mm rise.

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