Vertex Gaskets 98-99 Polaris 440 XCR Power Valve Bellows

If you're working on a 1998 or 1999 Polaris 440 XCR, these power valve bellows from Vertex Pistons are what you need to get that engine running right again. These are direct replacements for your original equipment bellows, meaning they're made to fit and function just like the factory parts, but at a much lower cost. Worn-out bellows can cause your power valves to stick or not operate correctly, which hurts performance and can make the engine feel sluggish. Replacing them with these well-built bellows will restore proper power valve operation, bringing back the engine's intended power and responsiveness.