Bicycle Headset Expander Top Cap Star Nut Plug Bolt Stem Expanding Nut Bolts For Bike 1 1/8" Front Fork Expansion Screw 22-25mm

Model Number : RR9394 Size : 22-25mm Fork Weight : 0.06KG Height : 52MM Material : Aluminium Alloy Brand Name : riderace Origin : Mainland China Type 1 : Bicycle Headset Expander Top Cap Star Nut Plug Bolt Type 2 : Bicycle Stem Expanding Nut Bolts Type 3 : Bike Front Fork Bowl Group Expansion Screw

‌The main function of the top cover of the bicycle earphone expander is to provide sealing and protection. It is usually made of lightweight materials such as carbon fiber or aluminum alloy to ensure that it does not add too much weight or burden during cycling. The design of the expander aims to ensure that the earphones remain stable under various riding conditions through its special structure and materials, and will not loosen or fall off due to vibration or wind.