What's the name of the motorcycle movie in 70's-80's with a white sportsbike?

The one that drives the bike is a guy, then the guy is killed, his girlfriend used his bike then seeked revenge. i think the last fight is when the girl in the white bike fought with a girl on a black bike..? i think the starting music in this vid was came from this... show more The one that drives the bike is a guy, then the guy is killed, his girlfriend used his bike then seeked revenge.
i think the last fight is when the girl in the white bike fought with a girl on a black bike..?

i think the starting music in this vid was came from this movie..
http://www.youtube.com/watch?v=JHGZs-le2do&mode=related&search=
Update: The guy who rides the white bike got killed(cant remember if he's a cop)..his girlfriend rode the bike then seek revenge.
Update 2: Sorry i thought it came from that movie..
Update 3: if i remeber correctly the bike or the helmet had built-in weapons in it..
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