Description
When your flail mower starts leaving stubble or rough patches instead of that clean, even cut you're used to, chances are it's time to replace those side knives. These cutting blades do the heavy lifting on your John Deere flail mower, chopping through grass, weeds, and brush to keep your fields, ditches, and fence rows looking sharp.
What You're Getting
- Precision-cut side knife that delivers clean cuts every pass through the field
- Heavy-duty construction with 1/4-inch thickness to handle tough stems and woody growth
- 3/4-inch mounting hole that fits your existing hanger system perfectly
- Direct replacement design that installs quickly without modifications
Built for Real Farm Work
This side knife fits John Deere 360, 370, and 390 series flail mowers—the workhorses you rely on for keeping pastures clean, clearing drainage ditches, and maintaining those areas where a regular mower just won't cut it. Whether you're dealing with overgrown fence lines or cleaning up after hay season, these mowers handle the tough jobs.
Made to Last
Farm work is hard on equipment, and flail mower knives take a real beating. This replacement knife is built to match the durability of your original equipment, with quality steel construction that holds an edge through rocks, roots, and whatever else is hiding in that tall grass.
Installation Notes
Swapping out worn side knives is straightforward—just remove the old hanger and knife assembly, slip on the new knife, and you're back in business. The 3/4-inch hole size matches your existing setup, so no guesswork involved. A good time to check all your knives is at the start of each season when you're doing routine maintenance.
This item is a suitable alternative for the following:
125-LK403