Description Champion 4 Two-Piece Toilet Flush Valve Upgrade with Buoy, Premium American Standard Replacement Kit Premium NuFlush replacement kit for Champion 4 two-piece toilets Flexible rubber flapper for better sealing power Nylon bolts – prevent corrosion seamlessly Adjustable buoy, Stays up Longer for more flushing power Restores powerful, reliable flushing performance Durable flush valve and buoy system for consistent sealing Helps reduce leaks and improve water efficiency Straightforward installation with clear instructions Ideal for homeowners and professionals seeking long-lasting quality