Aftermarket Mulching Blade

This blade is designed for 21-inch walk-behind mower decks and features a bowtie-shaped center mounting hole. Before purchasing, verify that your current blade matches these dimensions and that your mower's spindle requires a bowtie-style attachment.

A mulching blade is engineered with a specific curve and cutting edge that shreds grass clippings into tiny pieces. These clippings fall back into the turf, acting as a natural fertilizer that promotes a healthier, greener lawn.

No, this blade is specifically engineered for walk-behind mowers with a 21-inch deck. It is not designed or balanced for the higher speeds and different mounting requirements of riding mower decks.

While it fits many 21-inch decks, compatibility depends primarily on the center hole shape. Because this blade uses a bowtie center hole, it will only fit mowers that utilize that specific mounting configuration.

You should generally replace your blade once it shows signs of significant wear, such as rounded edges, deep nicks, or if it no longer provides a clean cut. For most homeowners, replacing the blade once per season or every 25 to 50 hours of use keeps the mower performing at its best.