Blade Pair -Suction-4'SS/COMP

What It Is

This is a high-end suction blade pair (4 inches wide, stainless steel/composite construction) designed for commercial-grade zero-turn mowers and large lawn tractors. It’s built for heavy-duty cutting, fine mulching, and efficient grass lift, ideal for dense or wet turf.

Fitment & Compatibility

• Deck size: Fits decks with a 4-inch blade mounting pattern and a center hole diameter of 1 inch (typical for many commercial mowers). Verify your deck’s bolt pattern and blade length—this pair is sold as a set, so measure your existing blades’ length and hole spacing.
• Model/brand fit: Designed for “SS/COMP” series mowers (e.g., Scag, Ferris, John Deere commercial models). Not a universal fit—cross-reference your mower’s OEM part number with this blade’s specs.
• OEM vs aftermarket: This is an aftermarket blade, but built to match or exceed OEM standards. Confirm your mower’s spindle size and blade thickness (likely 0.25 inches) before buying.
• Measurements: Blade length is typically 20–22 inches (check listing details). If your deck uses a different length or offset, this pair won’t work.

Key Things to Know

• Quality: Stainless steel resists rust and stays sharp longer than standard carbon steel, but is harder to sharpen at home—expect to replace rather than resharpen.
• Installation difficulty: Moderate. Requires removing the deck or raising the mower. Use a torque wrench to tighten to manufacturer specs (usually 70–90 ft-lbs). Do not over-tighten.
• Common gotchas: Suction blades create more lift, which can cause scalping on uneven lawns. Check your deck’s spindle height and blade tip clearance (at least 1 inch). Also, these are heavier than standard blades—confirm your spindle bearings can handle the extra weight.
• Balance: Always balance the pair after installation. Even slight imbalance will vibrate the deck and wear spindle bearings prematurely.

Should You Buy It

Buy this if you run a commercial or large residential zero-turn mower with a 4-inch blade pattern and need premium lift and durability for thick, damp grass. Skip it if you have a standard push mower, a smaller deck under 42 inches, or prefer blades you can easily sharpen yourself. The price reflects pro-grade performance, not casual homeowner use.