NEW Polaris XP 1000 and XP 4 1000 heavy duty rear chassis Brace. Designed and manufactured right here in Orange County, CA. Our brace puts the upper radius rod mounting points in double shear increasing strength that you will feel from the wheel. This upgrade bolts right on, no drilling or modifications necessary. This is a great upgrade for any racer or normal the weekend warrior that just wants to have a good time.