
Fluidmaster PerforMAX Flapper
Score: 88/100
Korky 3060BP
Score: 88/100Rankings

The Fluidmaster 502P21 PerforMAX is a universal, adjustable 2-inch toilet flapper designed to resolve weak flushes, running toilets, and water waste in toilets with 1.28, 1.6, or 3.5+ GPF ratings. It features a dial-adjustable mechanism for customizing flush volume, Microban antimicrobial protection, and a solid frame to prevent twisting during operation. It is best suited for homeowners with most 2-inch flush valve toilets experiencing weak flushes, running toilets, double flushes, or high water use.

The Korky 3060BP is a universal 3-inch toilet flapper designed for high-efficiency toilets, featuring durable red rubber resistant to harsh water conditions. Its main trade-off is the need for manual adjustment of the vent band to match OEM water levels. It is best suited for owners of post-2005 HET toilets with 3-inch flush valves.
| Attribute | ![]() | ![]() |
|---|---|---|
2 inches | 3 inchesbest | |
1 countbest | 1 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Material & Durability(2) | ||
Material | Rubber/Plastic | Red Rubber |
Seal Type | Solid Frame | Adjustable Vent Band |
Design & Features(2) | ||
Chain Material | Standard | Stainless Steel |
Flapper Type | Adjustable Flapper | Universal Flapper |
Packaging & Support(1) | ||
Warranty Period | 5 Years | 5 years |
Compatibility & Fit(5) | ||
Flush Valve Compatibility | Universal | 3-inch |
Flapper Diameter (inches) | 2 inches | 3 inches |
Toilet Type Compatibility | Standard | High-Efficiency Toilets (HET) |
GPF Compatibility | 1.28-3.5+ | 1.6/1.28 |
Flush Valve Size | 2 | 3 inches |

Products in the top-left offer the best value (high score, low price).

Professional reviewers, including Home Improvement Expert Bob Vila, rate the Fluidmaster 502P21 as the best overall 2-inch flapper for addressing running toilets. It is praised for its ability to fix weak flushes, double flushes, and water waste. Manufacturer sources describe it as the 'gold standard' and 'high performance standard' due to its durability, adjustability, and Microban protection.
Search results do not provide direct consumer quotes or aggregated star ratings. However, implied praise from product pages suggests users value the reliable sealing, water savings, and ease of use for fixing running toilets. No recurring complaints are detailed in the available data.




Professional reviewers and editors do not provide direct quotes or aggregated ratings in the available data. Manufacturer and retailer descriptions emphasize the product as the preferred choice for plumbing professionals, highlighting its adjustable white vent band for matching OEM specifications and its exclusive longest-lasting red rubber material.
There is no available consumer review data, testimonials, or forum discussions to analyze. Consequently, common praise, recurring themes, or specific user complaints cannot be detailed from the provided sources.