Standard Bore Top End Repair Kit For Polaris Big Boss, Trail Blazer, Xplorer 250 ATV (1985-2004)

About This Product

Is your old Polaris 250 ATV losing compression or smoking? This top end repair kit from NICHE could be the fix. It's a standard bore kit, meaning it's for cylinders that haven't been machined larger. It includes a piston, the necessary gaskets, and even a spark plug – basically everything you need for a basic top-end rebuild on engines like the Polaris Big Boss, Trail Blazer, Trail Boss, and Xplorer 250 models from about 1985 to 2004. It fits a bunch of OEM part numbers (like 3087049). Comes with a solid 2-year warranty. Made in China, but NICHE is a known brand in the aftermarket parts world. Please note the Prop 65 warning about chemicals. If you're handy with tools and your Polaris needs a refresh, this kit gets you back on the trail.