Box One Stem Spacers Kit number plates stack the spacers so the

stack the spacers so the vertical supports are in alignment

Box Two Center Clamp 1 Inch Stems have a single-bolt wedge clamp

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and a cold-forged aluminum alloy head gives the Box Two™ Seatpost a superb strength to weight ratio

these are also a requirement for USABMX Nationals

Box One Stem Spacers Kit number plates stack the spacers so theExtruded and CNC machined from 6061 T6 aluminum, Box One Stem Spacers feature an ultra minimalist design that is super lightweight. Weights range from 0. 02 to 0. 14 ounces (0. 56 to 4 grams), depending on the size. Sold in packs of five, each set provides spacing adjustments from 1 to 20 millimeters. Available in anodized red, blue, and black to fit 1 and 1 1 8 forks. For the best performance, stack the spacers so the vertical supports are in