TreyCyrille on Twitter If you are not so familiar with the used Harley Davidson motorcycles, it is better to take somebody along with you while you are going to buy one. That person, as it is obvious, must have good knowledge about used motorcycles.TreyCyrille on Twitter If you are not so familiar with the used Harley Davidson motorcycles, it is better to take somebody along with you while you are going to buy one. That person, as it is obvious, must have good knowledge about used motorcycles.