I chose the 60mm Streetfighter(the smaller of the two)and will fit right into the end of your Heli-Bars(also have them).Comes from the UK and mine only took about 4 days to get here,and has endless mounting positions,etc.(can have it facing up,down,out of the end,etc.).Works good enough that I can view all 3 lanes(on a 3 lane freeway
)behind me.You'll still have a small blind spot immediately to your left or right and will need to glance over your shoulder before making a lane change(I ran mirror block offs for the previous 8 years so got used to looking anyway).I'm not saying you'll be able to get the full field of vision as you would if running OEM's(always a trade off somewhere)but for me it's legal,looks good,and will let me know who or what's behind me.
Special_8mm_BMW_Kawasaki_Bar_End_Mirror