Sickle Mower Sections (25) for New Idea Fits Case-IH Fits Massey Ferguson Fits New Holland Mowers

What It Is

This is a pack of 25 sickle mower sections (the triangular cutting blades that bolt to the reciprocating knife bar) for hay, brush, or grass mowing. Designed for New Idea, Case-IH, Massey Ferguson, and New Holland sickle mowers, these are standard-duty replacement sections for cutting grass and light brush.

Fitment & Compatibility

Check these before buying:

• Mounting hole pattern: These sections use a 7/16" center bolt hole and a 1/4" countersunk hole—common on New Idea, Case-IH, MF, and NH mowers, but verify your bar uses this pattern.
• Section length: Standard sections measure 3 inches from point to point; measure your old section to confirm.
• Blade type: These are smooth-edge sections (not serrated). If your original sections are serrated, these won’t cut as well in tough conditions.
• OEM cross-references: Fits New Idea 520, 521, 525; Case-IH 1100, 1200; Massey Ferguson 41, 42; New Holland 451, 472. If your model isn’t listed, measure hole spacing and section length.

Key Things to Know

• Quality: Aftermarket, mid-grade steel. Fine for normal hay and grass, but will dull faster than OEM sections on sandy soil or heavy brush.
• Installation: Moderate difficulty—requires removing the old section from the knife bar (grind rivets or remove bolts), then bolting or riveting the new one. A section tool or punch helps align the holes.
• Common gotcha: These sections are counter-sunk for flat-head bolts. Using pan-head bolts will cause the section to sit unevenly and wear prematurely.
• Pack size: 25 sections covers a 7-foot cutter bar (standard spacing). Measure your bar length and section count before ordering—you may need more or fewer.

Should You Buy It

Buy this if you have a New Idea, Case-IH, Massey Ferguson, or New Holland sickle mower with standard 3" smooth-edge sections and you need a cost-effective bulk replacement for routine mowing. Skip if you need serrated sections for tough brush or require OEM-grade steel for heavy-duty commercial use.