Universal replacement air filter for small engines (28MM–58MM) designed for pocket bikes and mini scooters. Why you need this filter Restores airflow and throttle response: a fresh filter reduces airflow restriction so the engine runs more responsively during acceleration and under load. Cuts downtime with a direct swap: designed as a direct replacement, it installs quickly without complicated procedures, so you spend less time on maintenance. Built to last in real conditions: strength sponge and ABS construction provide durable filtration that stands up to rough use. Key features Compatibility: fits engines with intake diameters from 28MM to 58MM; suitable for most pocket bikes and mini scooters that use that size range. Materials: strength sponge element for effective particle capture and ABS housing for impact resistance and structural stability. Simple installation: direct replacement design allows straightforward removal of the old filter and installation of the unit without modifications. Performance benefit: improves overall engine airflow which helps maintain engine responsiveness during regular riding. How it solves common problems Replaces clogged or degraded filters that cause sluggish throttle response. Provides a reliable barrier against dust and debris to help maintain consistent engine operation. Durable construction reduces the need for frequent replacements in typical riding conditions. Typical applications Weekend pocket bike maintenance: swap the filter before a track day to restore throttle feel. Dailyuse mini scooter: a worn filter to improve responsiveness on city commutes. Poststorage service: fit a filter after winter storage to ensure proper airflow at first use. Specifications Compatibility: engine intake diameters 28MM–58MM Materials: strength sponge filter element, ABS housing Fitment: pocket bikes and mini scooters; direct replacement