4x Green Titanium Rear Disc Rotor Bolts Screws Thread-lock for Kawasaki ZX-11 1994-2001. 4x Green Titanium Rear Disc Rotor Bolts Screws Thread-lock for Kawasaki ZX-11 1994-2001. Made from Aircraft Spec Grade 5 Titanium our bolts are 40% lighter than the standard OEM Parts.