BIGBearing HiTorque 210ftlb Solid Steel Billet Pulley Electric PTO Clutch 070-1000-00 for Bad Boy CZT ZT Elite Lightning Outlaw & More 5218-220 5218-114 & Upgrade Larger Replaceable Pulley Bearing

What It Is

This is a heavy-duty electric PTO clutch pulley assembly designed to replace the OEM part on Bad Boy zero-turn mowers (CZT, ZT Elite, Lightning, Outlaw, and select others). It engages the mower blades via the electric clutch and delivers 210 ft-lb of torque from a solid steel billet pulley.

Fitment & Compatibility

• Direct fit for Bad Boy models using OEM part numbers 5218-220 or 5218-114. Common on CZT, ZT Elite, Lightning, Outlaw, and similar series (check your model year).
• Measure before buying: Confirm your existing clutch’s pulley diameter (typically 4.5” on these models) and shaft size (usually 1” diameter with a 3/16” keyway). The 070-1000-00 cross-reference must match your machine’s PTO clutch assembly.
• Deck size not a factor – compatibility depends on the PTO clutch mount, not blade or deck size.
• Aftermarket upgrade – not OEM; designed as a stronger replacement with a larger, replaceable pulley bearing (standard 6203 bearing) that can be serviced separately.

Key Things to Know

• Torque rating is high – 210 ft-lb is well above most OEM clutches (typically 120–150 ft-lb). This means better blade engagement under heavy grass, but may stress the engine shaft if the mower is not designed for it.
• Bearing is replaceable – unlike many sealed OEM clutches, this uses a standard 6203 bearing that can be swapped out when worn, extending the part’s life.
• Installation is moderate – requires basic mechanical skills, a puller, and torque wrench. You’ll need to remove the old clutch, align the keyway, and torque the center bolt to spec (usually 90–110 ft-lb). No special wiring changes – it plugs into the existing harness.
• Potential fitment issues – some users report needing to shim or adjust the air gap (0.010–0.015”) after installation. Check clearance between the pulley and the engine block.

Should You Buy It

Buy this if you own a Bad Boy ZT, ZT Elite, Lightning, or Outlaw with a failing PTO clutch and want a stronger, serviceable upgrade that can handle heavy use or commercial mowing. Skip it if you prefer OEM simplicity or if your machine uses a different clutch mount or shaft size.