YAMAHA FZ1 1000 FAZER FJR 1300 FZR 1000 AS3 TOP YOKE STEERING STEM NUT RED. AS3 Performance Top Yoke Steering Stem Nut for. AS3 Performance stem nuts are manufactured from 7075 T6 aluminium and are a great upgrade from the OEM stem nuts, they weigh only 21 grams and have a smooth anodized finish to match the rest of our range of CNC machined hard parts.
