Function and benefits This sponge ring is used in front forks to aid lubrication, reduce hard wear, and extend service life. Oil absorption and storage The sponge material absorbs and stores oil, improving oil retention and contributing to better wear resistance. Compatibility Suitable for the majority of front forks. Replacement guidance It is recommended to sponge rings during front fork or rebuilding. Material Sponge material designed for oil absorption and lubrication support. Size and fit Designed to fit most front forks; exact dimensions are not specified. Use scenarios Routine maintenance: Use when servicing a common front fork to maintain proper lubrication and reduce wear. Fork rebuild: sponge rings during front fork disassembly and overhaul to restore oil management. Harsh or variable conditions: Install to help maintain lubrication and oil retention in environments with dust, moisture, or rough riding.