Installing Arc Audio Aftermarket Speakers in a 2006 Harley-Davidson Screamin' Eagle Ultra 

you need amp, Moto 602 RMS is 70 watts stock radio can not push this speaker

I'll give you this much are car audio speakers sound good that being said my experience with them is their crap about 13 months after spending quite a bit of money on these papers I bought six and a half inch pro series ARC Audio for my 2009 Harley Ultra a 13 month after purchase they crapped out when you call our call arc Audio customer service oh no problem send them in until they find out they are either car or motorcycle speakers then they tell you nicely go buy another pair $400 for one pair of six and a half inch speakers that lasted one year I went to Walmart and bought six and a half inch Sony Tri axles they have been in the bike for years sound fantastic and cost $43 don't get me started on my $600 ARC Audio amplifiers that are doing clipping and thermal shutdowns after 18 months so I change those out to cheap amplifiers from Walmart that has now lasted this same amount of time as my cheap Sony speakers and that amplifier cost me six hundred bucks show as far as ARC Audio is concerned I will never buy them I will never recommend them their customer service sucks ass if it's anything after 365 days your shit out of luck you're better off going to Walmart buying all your stuff there and you can get a 3-year warranty from them for about 6 bucks never again from ARC Audio