You May Want To Remove Your Headset,if You Cut The Stem Off. Take Out Your Fork,put The Fork And Disected Stem In A Quality Vise. Soak The Fork Upsidedown From The Inside With Liquid Wrench Then Apply A Propane Torch Carefully To The Center Of The Fork Head .and Drive Out The Stem With Along Punch.remember To Pad The Fork Collar As Not To Mar The Paint.