Box Zero Stack Headset Spacers

Extruded and CNC-machined from 6061-T6 aluminum, Zero stem spacers feature an ultra-minimalist design that is super lightweight. Weights range from 0.2 to 1.1 grams, depending on the size. Sold in packs of five, including two 1-millimeter and one each 3-, 5- and 10-millimeter heights, the set provides spacing adjustments from 1 to 20 millimeters. Available in anodized red, blue, gold and black to fit 1” and 1 1/8” forks. For the best performance, stack the spacers so the vertical supports are in alignment.