the crack is beside the stitch so altering it (wherein it would be stitch again on the part of the damaged) would mean smaller cover. This might tear up after just a few months..wait is there a 3m patch for leather seats?
The seats in 4th gen Rebels are vinyl and fabric, not leather. Assuming your warranty has expired, I'd take it to an upholstery shop and see if there's anything they can do with it. Otherwise you can buy replacement seat covers.
you re-stitch the cover
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