if you arent sure if something will work, give me a call, I dont know about the radar detector, but if you want to replace it for a dark grey that will work give me a call and I will exchange it.
if you need help with sizes and fitment email or call me.
but at 510 with normal sized torso on an street glide you can do either the 7 or 10 inch ultra shield or an 8- 9 inch x-stream.