Spartan Mowers 438-0001-KT 6 Pack 54-Inch Deck Blade SRT RT RZ KG

What It Is

The Spartan Mowers 438-0001-KT is a factory-authorized 6-pack of 54-inch deck blades designed for Spartan zero-turn mowers. These are high-lift blades intended for fine cutting and efficient grass discharge on residential and commercial properties.

Fitment & Compatibility

This kit directly replaces OEM Spartan part 438-0001-KT and fits Spartan 54-inch decks on SRT, RT, RZ, and KG series mowers. Before buying, measure your existing blade length (center hole to tip) – it must be exactly 18 inches. Also confirm your deck spindle pattern: these blades use a 5-point star center hole with a 1-inch diameter arbor. Do not assume fitment on non-Spartan decks or aftermarket spindles without verifying the star pattern and bolt size.

Key Things to Know

• Quality: These are genuine Spartan blades, not aftermarket copies. Expect consistent heat treatment and balanced edges, but inspect each blade for burrs before installation.
• Installation: Moderate difficulty. You’ll need a 15/16-inch socket and torque wrench (set to 70-80 ft-lbs). Use thread locker on the blade bolt to prevent loosening during operation.
• Common gotcha: The “6 pack” includes three pairs, but each pair is identical – no staggered or offset blades. Do not mix with different blade types on the same deck.
• Sharpening: These are disposable blades; resharpen only if you have a professional blade sharpener. Over-sharpening changes the lift angle and reduces cut quality.

Should You Buy It

Buy this if you own a Spartan 54-inch zero-turn with an SRT, RT, RZ, or KG deck and want guaranteed OEM fit, consistent cut quality, and the convenience of a six-pack. Skip it if you need blades for a different brand or deck size, or if you’re on a tight budget and are willing to risk aftermarket fitment issues.