CUB CADET 19A30041100 50" Xtreme Mulch Kit Star Center Blade 2015-2021 RZT SX XT1 XT2 50" Deck

What It Is

The Cub Cadet 19A30041100 is an OEM Xtreme Mulch Kit designed for 50-inch Star Center blades, enabling fine grass clipping mulching on select Cub Cadet RZT, SX, XT1, and XT2 zero-turn and lawn tractors (2015–2021). It replaces standard discharge or bagging blades to improve lawn health by recycling clippings as natural fertilizer.

Fitment & Compatibility

Before buying, confirm your mower has a 50-inch deck (not 46" or 54") and uses Star Center blades (5-point star center hole, not oval or round). This kit fits:

• Cub Cadet RZT SX, RZT L, RZT 50 (2015–2021)
• XT1, XT2, XT3 with 50" deck (2015–2021)
• Z-Force SX, Z-Force L (2015–2021)

Check your mower’s model/serial number against Cub Cadet’s parts diagram. The kit includes three blades, a block-off plate, and hardware. It is OEM-only; generic aftermarket blades may not match the wing profile or center hole pattern. Measure blade length (should be ~16.5") and center hole diameter (5/8" star) to verify.

Key Things to Know

• Installation difficulty: Moderate. You’ll need a socket set and torque wrench (blade bolt torque: 70–80 ft-lbs). Jack up the mower or tilt it safely for access.
• Mulching performance: Best with dry, short grass (2–3" tall). Wet or tall grass clogs the kit quickly—avoid it in those conditions.
• Common gotcha: The included block-off plate replaces the discharge chute; if you want to switch back to bagging/side-discharge, you’ll need to remove it. Keep the original chute hardware.
• Durability: OEM blades last 1–2 seasons with normal use; sharpen or replace annually. The kit’s quality is high, but the price reflects OEM markup.

Should You Buy It

Buy this if you own a compatible Cub Cadet with a 50" deck, want a factory-fit mulching solution for a cleaner lawn appearance, and don’t mind the extra cost for OEM reliability. Skip it if you prefer bagging or side-discharge, or if your grass is often wet/tall—a standard blade set will serve you better.