The product is a new piston kit designed for Polaris ATVs from 1990 to 1993, with an 83mm piston size. Manufactured by Niche, this kit includes all the necessary components for a full engine rebuild, such as the piston, rings, and pins. This high-quality piston kit is designed to provide optimal performance and durability for your Polaris ATV, ensuring smooth operation and efficient power output. Perfect for those looking to replace worn-out or damaged parts in their ATV engine, this Niche piston kit is a reliable choice for restoring your vehicle to its former glory.