9 PK 11224 Rotary High Lift Blades Compatible with Exmark 103-6403, 103-64035

What It Is

This is a set of three 18-inch rotary high-lift blades designed for commercial zero-turn mowers, specifically Exmark models. The high-lift design increases airflow for superior bagging and side-discharge performance in tall or wet grass.

Fitment & Compatibility

• Deck size: Fits Exmark 48-inch, 52-inch, and 60-inch decks using three blades (check your deck configuration—some 60-inch decks use two blades).
• OEM replacement: Directly replaces Exmark part numbers 103-6403 and 103-64035.
• Measurements: Center hole diameter is 0.75 inches (standard for Exmark spindles); blade thickness is 0.187 inches. Confirm your spindle nut size (usually 1 inch or 5/8 inch) before installing.
• Cross-check: Also fits select Lazer Z, Turf Tracer, and Vantage models from 2005 onward. Verify your model and serial number on Exmark’s compatibility list.

Key Things to Know

• Performance: High-lift blades create more lift, which improves cut quality in thick grass but increases power draw—ensure your engine can handle it.
• Installation: Easy swap with basic tools (socket wrench, torque wrench recommended). Tighten to 70-80 ft-lbs. Use thread locker if blades are new.
• Durability: PK blades are heat-treated and hardened, but high-lift designs wear faster than standard blades in sandy or rocky soil.
• Common gotcha: High-lift blades can cause excessive vibration if deck is out of balance—check spindle bearings and blade balance after installation.

Should You Buy It

Buy this if you have an Exmark zero-turn with a 48-60 inch deck and need better bagging or side-discharge performance in heavy grass. Avoid if your deck is smaller than 48 inches or you primarily mulch (use a Gator or mulching blade instead). Good value at $105 for a commercial-grade set.