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mxz 583 gearing mods

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  1. General
    I just bought a 98mxz 670 s-chassis with a 583 motor dumped in it for $1000. It has almost 8k on motor and 4k on chassis. The sled has been great, it was a buddy's sled for the past 9yrs and I've ridden it a lot. It has stock gearing, I'm wanting to do a gear mod and possibly some mild port...
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