These sponge rings for bicycle front forks seal against dust, aid lubrication, reduce hard wear, and extend fork service life. - Oil absorption and lubrication: The foam sponge enhances wear resistance and supports oil uptake and lubrication retention. It absorbs lubricant quickly to help keep the fork seals and bearings lubricated. - Compatibility: Suitable for most front forks. - Maintenance guidance: Replace the sponge rings and service the front fork as part of routine maintenance. - Material and function: Made from sponge material to provide effective dust sealing, oil absorption, and lubrication distribution, promoting smoother fork operation and longer life. Use scenarios - Regular maintenance on mountain or city bikes in dusty environments to prevent dirt ingress and reduce wear. - After a fork service or rebuild, replacing the sponge rings helps restore lubrication and sealing. - Riding in wet or muddy conditions where quick oil absorption helps maintain lubrication despite exposure to water and debris.