2 Pack High Lift Mower Blade Compatible with Toro TimeCutter 4200 4225 4275 42" Decks 137-1999-03

What It Is

This is a 2-pack of high-lift mower blades designed for Toro TimeCutter zero-turn mowers with 42-inch decks. The high-lift profile increases airflow under the deck, improving grass clipping discharge and bagging performance, especially in thick or damp grass.

Fitment & Compatibility

Before buying, confirm your mower is a Toro TimeCutter model 4200, 4225, or 4275 with a 42-inch stamped deck. Cross-check the OEM part number: 137-1999-03. Measure your existing blade length—these are typically 16.5 inches long with a 1-inch center hole and a 0.25-inch offset. Do not use on 50-inch or 60-inch decks, or on non-Toro models without verifying the spindle pattern. Aftermarket blades may vary slightly in thickness or balance; weigh them against your originals if possible.

Key Things to Know

• Installation difficulty: Moderate. You’ll need a socket wrench, torque wrench (set to 70-90 ft-lbs), and a blade removal tool or a block of wood to prevent spindle rotation.
• Common gotcha: High-lift blades create more suction but also generate more drag, which can reduce engine RPM and cut quality on underpowered or older mowers.
• Quality: These are aftermarket replacements, not OEM Toro. Check for balanced edges out of the box; if they wobble, sharpen or replace them.
• Lift vs. mulching: High-lift is ideal for bagging or side discharge, but poor for mulching—you’ll get clumps and uneven cut if you don’t switch to a low-lift or mulching blade.

Should You Buy It

Buy this 2-pack if you own a Toro TimeCutter 42-inch deck and need affordable replacements for bagging or discharge cutting, especially in tall or wet grass. Skip it if you prefer OEM parts for guaranteed balance and fit, or if you mainly mulch—these blades will leave clumps and require more frequent sharpening.