factory expert sent a new headlight grill to my office and my boss likes this one,,, i don't know how it install to my bike, the grill looks a better than my current one and my buddy said it it really easy, he will come to my house and install it for me,   before he coming, i profer to install it by my self and sure my son could be a help handy,,if he is free...

I suspect it fits round the back of or replaces the front trim ring on the headlight.
Take trim ring off the headlight and see which it is. Should take about 5 mins with a Philips screwdriver