To the best of my knowledge this is the lightest 6 inch brake rotor on the market! 6 inch diameter by 1/8 inch thick. Laser cut from 6AL-4V Grade 5 titanium. Made to fit the 2 3/8 bolt hole pattern mini lite brake hub. This rotor only weighs 125 grams! The nearest competitor's rotor weighs 160 grams. I have personally tested this rotor an