
Fluidmaster PerforMAX Flapper
Score: 88/100Lavelle Kohler Toilet Flapper
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 Lavelle Industries 3010BP is a 3-inch Class 5 flapper designed as a direct replacement for specific Kohler toilet parts, featuring exclusive Chlorazone rubber for superior durability. It is manufactured in the USA and backed by a 5-year warranty, offering a tight seal and resistance to chlorine, bacteria, and hard water conditions. Ideal for routine maintenance on two-piece Kohler toilets or upgrades for longevity.
| Attribute | ![]() | Lavelle Kohler Toilet Flapper |
|---|---|---|
2 inches | 3 inchesbest | |
1 countbest | 1 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | Lavelle Kohler Toilet Flapper |
|---|---|---|
Material & Durability(2) | ||
Material | Rubber/Plastic | Chlorazone Rubber |
Seal Type | Solid Frame | Tight Seal |
Design & Features(3) | ||
Chain Adjustability | true | false |
Installation Type | DIY | Standard |
Flapper Type | Adjustable Flapper | Class 5 |
Packaging & Support(1) | ||
Warranty Period | 5 Years | 5 years |
Compatibility & Fit(5) | ||
Flush Valve Compatibility | Universal | Kohler 3-inch |
Universal Fit | true | false |
Flapper Diameter (inches) | 2 inches | 3 inches |
Toilet Type Compatibility | Standard | Kohler |
Flush Valve Size | 2 | 3 inch |

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.

Manufacturer and retailer descriptions emphasize the product's superior chlorine resistance and plumber-preferred reliability for Kohler repairs, positioning it as a premium OEM-style replacement.
Recurring themes inferred from product pages suggest praise for durability in hard or chlorinated water and easy installation, with no documented complaints found in the source data.