Restore smooth, reliable blade operation with this high-quality deck spindle assembly for Bad Boy mowers. Designed to replace worn or damaged spindles, this unit fits a wide range of CZT, ZT, Pup, and Lightning mower models — from 48" up to 72" deck sizes.

Whether you're maintaining a commercial fleet or upgrading your personal mower, this OEM-grade spindle offers a direct fit, durable construction, and long-lasting performance.

Replaces OEM Part Numbers:

• 037-6015-00

• 037-6015-50

• 037601500

• 037601550

Fits the Following Bad Boy Mowers:

• CZT Series – with 48", 52", 54", and 60" decks

• ZT Series – with 50" and 60" decks

• Pup Series – with 48" to 72" decks

• Pup Lightning Series – with 48" to 72" decks

• Outlaw XP – 2015–2016 models with 61" or 72" decks

Key Features:

• OEM-grade quality – Engineered for durability and performance

• Pre-greased bearings – Ready to install out of the box

• Heavy-duty construction – Withstands high blade speeds and tough mowing conditions

• Bolt-on fitment – Designed to match OEM spindle spacing and specs

Specifications:

• Mounting: 4-bolt pattern

• Shaft: Splined

• Includes pulley mount and housing (blade bolt sold separately)

Important Notes:

• Confirm spindle part numbers or dimensions before ordering

Satisfaction Guarantee:

• Brand new, high-quality replacement part

• Packaged securely and ships fast
  

Suggested Add-Ons:

• Blade set (match your deck size: 48", 54", 60", or 72")

• Deck belt for complete performance restoration

• Spindle bolt kit or mounting hardware

• Mower maintenance pack (filters, oil, spark plugs)