FXRS = Low Rider.1992 FXR models were: FXR Super Glide/ FXLR Low Rider/ FXR-SP Low Rider Sport/ FXRS Convertable Low Rider/ FXRT Sport Glide. The difference in model designations could be as simple as shorter shocks, or Windshield & Saddlebags standard.
I think you got a good deal for $3,700. My '92 Dyna has nearly 70, 000 trouble free miles.
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