they are cheap gauges but probably the only thing you will find new that will work with your xs400. You can try other gauges off other bikes but it may be hit or miss (speedos tend to be pretty standard - tachs are harder)
dakota digital makes universal electronic speedometers for bikes, if you like the space age digital looks (would be pretty wild on a cafe racer). Tachs are pretty easy to set up, speedos you may need a conversion box.
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