8TEN LawnRAZOR Blade for Ferris Snapper Simplicity ZTX 25 42-Inch Deck 1758878BMYP (High Lift) 2 Pack

What It Is

The 8TEN LawnRAZOR Blade (High Lift) is an aftermarket replacement blade designed for Ferris, Snapper, and Simplicity ZTX 25 models with a 42-inch cutting deck. Its high-lift profile increases airflow for superior grass discharge in bagging or side-discharge mowing, ideal for thick or wet grass conditions.

Fitment & Compatibility

Before buying, verify three things: your deck size must be exactly 42 inches (measure cutting swath, not deck housing). This blade replaces OEM part 1758878BMYP and fits specific Ferris, Snapper, and Simplicity ZTX 25 series mowers—check your model number against the manufacturer’s list. The blade length is 21 inches with a 1-inch center hole and 0.25-inch thickness. It is not compatible with 46-inch or 48-inch decks, or non-ZTX Snapper/Simplicity models. Confirm your spindle pattern matches a single-center mounting hole (not multi-hole or star-pattern spindles).

Key Things to Know

• Quality vs OEM: The 8TEN LawnRAZOR is a budget-friendly aftermarket blade. While heat-treated and coated for rust resistance, it may not match OEM steel hardness exactly—expect slightly shorter lifespan in abrasive conditions.
• Installation difficulty: Easy DIY swap. Use a torque wrench to tighten center bolt to 70-90 ft-lbs (check your manual). Always wear gloves; edges are sharp.
• Common gotcha: High-lift blades increase engine load and can cause vibration if unbalanced. After install, spin blade by hand to check for wobble. If you mulch regularly, consider a low-lift or mulching blade instead.
• Two-pack value: You get two blades for ~$30, which is cost-effective compared to OEM single blades. Keep the spare for quick mid-season replacement.

Should You Buy It

If you own a Ferris, Snapper, or Simplicity ZTX 25 with a 42-inch deck and primarily bag or side-discharge, this is a solid budget pick. It’s not for mulching purists or commercial operators needing extreme durability, but for residential use with occasional thick grass, the 8TEN LawnRAZOR delivers good lift and value. Just double-check your deck size and model number first.