Compatibility: Featuring a standard 1 1/8 inch (28.6mm) inside diameter, it fits all modern performance bikes, including MTB, road, cruiser, and electric bikes
Multi-size Adjustment: This 12 pieces stem spacers kit includes 6 different sizes (1/2/3/5/10/15mm) for precise handlebar height adjustment to fit your riding style. They can be freely combined to meet your specific needs
High Strength Carbon fiber: The high stiffness and super lightweight design (45% lighter than aluminum) enhances your bike's performance without compromising strength or durability, while the high corrosion resistance ensures reliable performance in all weather conditions
Premium Appearance: The woven carbon texture provides a premium appearance that complements high-end bikes. Each spacer features CNC-machined edges for precise stack alignment