Polisport chain sliders are perfect replicas of the OEM stock parts, produced in TPU (Thermoplastic polyurethane) to better withstand the friction and abrasion from your bike's chain. Our chain sliders are produced to be durable and to perfectly fit your dirt bike. Why Polisport chain slider parts are the best choice for your Dirt Bike? Injection-molded, quality plastic components with a perfect OEM type fit. Exact replica of stock OEM plastic components but stronger Inexpensive alternative to OEM replacement parts. Stock color match Resistant to impact and abrasion Produced in TPU (Thermoplastic polyurethane) Tougher than stock sliders Packaged in a printed plastic bag CHAIN SLIDER - BLACK KAWASAKI KX250F 21-25 KX450F 19-25 KX250X 22-25 KX450X 22-25