Frame sizing question going from Nemesis to Defcon-

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  1. #1
    mtbr member
    Join Date
    Jul 2015

    Frame sizing question going from Nemesis to Defcon

    Getting ready to make a purchase for the Defcon 1 but the question came up: what frame size? Unfortunately the local bike shops do not carry any Defcon on stock so it will be purchased sight unseen.

    Current bike: Nemesis in 19" frame. I had to shorten the stem from 110mm to 90mm - bike extremely comfortable as a result on the harder terrain trails since shortening of stem. I also do have the seat set back in the seat post (not forward).

    Tried a Scott Scout a few years ago in a 'Medium' frame, was way too short.
    Son has a Diamondback hardtail 26-inch tire in a 'Medium' (17") frame, feel squished.
    Use to ride a Jamis Durango 26-inch tire in 19" frame, felt comfortable.

    ...but that does not mean these sizes match over equally to the larger Full-Suspension bikes. So, do I need a 17" or 19" frame in Defcon?

    Height: 5'9.5" (177cm)
    Leg length: pants length size: 31"
    Arm lenght: 27" from shoulder to fingers or 35" in dress shirt sleeve size.

    Defcon frame sizing:
    Jamis Defcon 1 Enduro Full Suspension Bike

    Nemesis frame sizing (current model, not the model I own):

  2. #2
    Join Date
    Aug 2004
    At your height you could probably ride either size bike comfortably, it's just a matter of how you prefer the bike to fit. It also depends on the terrain you'll be riding and how active you are on the bike. I'm 5'5" and I ride a 17" Defcon. It's a little on the long side for me, but I run a super short stem and I'm really active on the bike, so I like the extra room that the longer bike provides.

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