they was alot of surface rust on the pipes.. That was the main reason, But. I just liked the look of the flatt black pipes...My bike has the whole right side billet clutch cover, and etc of the motor. S i thought it was overkill Plus I wanted to make it my bike in a way.. Ad my own little customization i guess you could say....And im a big fan of the all black bikes!!!!! Final test is when they go on the bike, and i see how they look!!!