507170 Dust shield, swingarm bearing

These MCS dust shields are essential for protecting the swingarm bearings on 1952 to 1981 K-model and XL Sportster motorcycles. By keeping road grime, water, and dust away from the bearings, these shields significantly extend the life of your rear suspension components and maintain smooth handling. They are a direct replacement for OEM 47519-52 and 507170. Since most applications require two shields, these are conveniently sold as a pack of two. For any Ironhead owner, replacing these shields during a swingarm service is a small step that prevents costly bearing failure down the road.