K&N RK series air filter assemblies are a remarkable combination of performance and style. They are custom-designed for your cruiser and are machined from billet aluminum, luster-polished, and then chrome plated or powdercoated to complement your show bike. These K&N RK series air filter assemblies come in two unique styles and three unique finishes. Additionally, K&N RK series air filter assemblies come complete and ready to use, and they even include a mounting bracket kit.