BroLuka 2Pcs Steel Bicycle Headset Bearings, Replacement for Trek Domane Emonda Madone with Knock Block Systems, 30.15x41x6.5mm and 40x51x6.5mm Sizes

• 【Smooth Rotation】The headset bearings enable friction‑free rotation. They effectively reduce resistance when turning the handlebars, making riding more comfortable and effortless while also minimizing wear on other headset components.
• 【Package Contents】Includes 2 bicycle headset bearings (upper and lower). Dimensions: Upper bearing: 30.15 x 41 x 6.5 mm – 36/45°. Lower bearing: 40 x 51 x 6.5 mm – 36/36°.
• 【Material】Made of alloy steel with excellent hardness, wear resistance, and impact resistance. The alloy steel construction ensures they withstand long‑term use and frequent riding vibrations without deformation or damage.
• 【Easy Installation】Installing these headset bearings is simple and quick—no professional tools or complex skills required. Easily replace old worn components with these bearings for a cost‑effective replacement solution.
• 【Wide Compatibility】Replacement models for Trek Domane, Emonda, and Madone bikes. Specifically designed to work seamlessly with steering limiters, maintaining proper function during turns.

2Pcs Bicycle Headset Bearings Replacement Headset Bearings play a crucial role in the functionality of your bike. These bearings contribute to the smooth steering and handling of your bicycle, enhancing your overall riding experience.