Directed by Ruggero (Cannibal Holocaust) Deodato, starring his hot ex-wife Sylvia Dionisio, along with my second favorite waspy-looking Italian actor Ray Lovelock.
Not really knowledgable on Poliziotteschi movies and I couldn't find the old Euro-Crime thread to ask about it in there.
I haven't seen a whole lot myself but while it's not the best it's worth your time. Plays like a crazed, cold-blooded Starsky & Hutch episode (which was the main inspiration I think). Some great motorcycle chases and all-around entertaining but basically too tongue-in-cheek to be taken seriously.
The best poliziotteschis are the Di Leos (The Boss, Caliber 9, Shoot First Die Later, Italian Connection, Kidnap Syndicate).