8TEN LawnRAZOR Mower Blade Set for Lesco Murray Bagger Tractors 40 inch Decks 91871HT 91871E701 91871E701MA (High-Lift)

What It Is

The 8TEN LawnRAZOR Mower Blade Set is a set of three high-lift blades designed for 40-inch cutting decks on Lesco and Murray bagger tractors. They are built for heavy-duty mulching and bagging, with a curved design that increases airflow to lift grass clippings into the bagger.

Fitment & Compatibility

Before buying, confirm your deck is exactly 40 inches (measured blade tip to tip). These blades replace OEM part numbers 91871HT, 91871E701, and 91871E701MA. They fit Lesco and Murray models with 40-inch decks that use a three-blade configuration, including many Lesco commercial zero-turn and Murray bagger tractors. Check your current blade’s center hole diameter (should be 1 inch) and overall length (approximately 20.5 inches). Not compatible with 42-inch or 46-inch decks, or with standard-lift (non-bagger) decks.

Key Things to Know

• High-lift design means more air movement for bagging, but also more power draw—your engine must be in good condition.
• Installation difficulty is moderate; you’ll need a socket wrench and torque wrench (recommended 70–90 ft-lbs). Always replace all three blades at once to maintain balance.
• Sharpness out of box is good, but they are not pre-sharpened—expect to hone them after the first heavy use for best cutting.
• Common gotcha: The blades are thicker than OEM, so check that your blade bolts are long enough to thread fully. If not, use OEM bolts or get longer ones.

Should You Buy It

Buy this set if you have a 40-inch Lesco or Murray bagger tractor and want reliable, affordable high-lift blades that improve bagging and mulching performance. It’s a smart choice for homeowners or light commercial use, but skip it if you need a standard-lift blade for side-discharge only.