DVPARTS 4X Ignition Key for Bad Boy Zero Turn Mower MZ ZT CZT Outlaw Pup Fits All Cub Cadet Zero Turn Mowers RZT42 RZT50 RZT54

What It Is

This is a set of four aftermarket ignition keys designed for Bad Boy zero turn mowers (MZ, ZT, CZT, Outlaw, Pup) and all Cub Cadet zero turn mowers in the RZT series (RZT42, RZT50, RZT54). Use them to start your mower engine and operate the safety interlock system.

Fitment & Compatibility

• Brand fit: Confirmed for Bad Boy MZ, ZT, CZT, Outlaw, and Pup models. Also fits all Cub Cadet RZT42, RZT50, and RZT54 zero turns.
• OEM vs aftermarket: These are aftermarket keys, not genuine Cub Cadet or Bad Boy parts. They match OEM key profiles for the listed models.
• Measurements: Key shaft is approximately 0.375 inches (9.5 mm) in diameter and 1.5 inches long. Check your mower’s ignition switch key slot shape—these are standard round shaft keys with a flat side.
• Before buying: Verify your mower’s model number and year. Some older or non-standard models may use a different key profile. If your current key has a plastic head or a unique shape, compare photos carefully.

Key Things to Know

• Quality: Made of nickel-plated brass, solid feel. No sharp edges, but not as heavy as OEM keys. Expect reliable function for multiple seasons.
• Installation: No tools needed—just insert and turn. No modifications required.
• Common gotcha: These keys work only with standard ignition switches. If your mower uses a keyless start or push-button system, they won’t work.
• Spares: You get four keys, so keep one in the garage, one in the mower, and one as a backup. Good for shared-use mowers.

Should You Buy It

If you own a compatible Bad Boy or Cub Cadet zero turn and need affordable spares, this is a solid buy. The price is low, the build is decent, and you get four keys. Skip it if you want OEM branding or need a key for a non-listed model.