Had anyone tried using the older XT speedo drives? I imagine the axle is bigger on the TTR , I have bored on drive out to 17mm to use on one USD swap, changes in wheel bearings can bring the axle size down to 17 if the TTR is bigger yet. An axle will need to be made then. DRZ400(or DR650SE) front wheel can be used with it's drive as another option, spacer will possible need to be made but then a person can keep the oem speedometer.
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