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  1. Observed Trials Discussion
    Hello, I have been having trouble with keeping the rear axle on my bike in position. I ride a 2004 Zoo Pitbull with vert-dropouts, with a 135mm Echo TR hub. No matter how much I tighten the axle down, it always seems to keep sliding downwards on the drive side, about 3-5mm, after repeated use...
  2. Your Bike Trials Media
    hey this is my zoo pitbull? Can anybody let me in on info about this, like price in USD and some specs? plz and year? thank you. i switched to this from BMX but idk so im looking for a 24" mostly and inspired build? can anyone give me some pointers thank you.
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