This precision-engineered titanium bike headset top cap is designed for 1-1/8 inch steerer tubes, making it compatible with most modern mountain and road bikes. Crafted from lightweight yet durable titanium material, this headset cover weighs just 0.4 ounces,helping to reduce overall bike weight without sacrificing strength or performance. The titanium construction offers excellent corrosion resistance and longevity, ensuring reliable performance through countless rides and varying weather conditions. Whether you're upgrading your current setup or replacing a worn component, this headset top cap delivers the performance and reliability that serious cyclists demand for both mountain trail adventures and road cycling pursuits.