Mountain Bikes · Public discussion

Upgrade K2 Evo 4.0 with mega 9?

Started by turbopete · · Last activity · 3 posts · 1,569 views

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Mountain Bikes
Published
21 August 2004
Last activity
22 August 2004
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turbopete
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  1. Forgive me if it's a basic question, but I've just recently got back into riding and decided my old Trek 930 needed to go. I bought a K2 evo 4.0 frame with the intentions of swapping everything over but the evo needs v-brakes so i need new levers, everything snowballed so now I'm building it FRESH.

    My question, I got really worried when I saw the 9 speed hub may be too wide for some bikes? With the Evo having a carbon rear triangle, spreading is not an option. I'm going with all new Deore LX drivetrain, will it all fit?

    This will be quite an upgrade from my old hardtail with STX equipment, only if it all works.

    Thanks for your help, any equipment suggestions would be appreciated also.

  2. 135mm has been the more or less standard width for mountain bike rear hubs for quite a few years. To make room for extra gears, component manufacturers have moved everything closer together rather then making hubs wider. In fact, the width of the free hub body has not changed on a 8 speed to a 9 speed set up, just that the cogs on a 9 speed are more squished together.

    If you are worried, just measure the width between your dropouts on the rear end of your bike. Should be 135mm.

    Cheers,
    Juba

  3. Thank you for the info, it is in fact 135mm, can't wait to get it together now.

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