8TEN Gen 3 Electric PTO Clutch for Ferris & Bad Boy — CCW, 1-1/8 inch Crank, 370° Thermal Cutoff

The 8TEN Gen 3 Electric PTO Clutch is a direct-fit replacement clutch engineered for Ferris and Bad Boy zero-turn mowers that delivers faster braking, a robust 370° auto thermal cutoff, and reliable CCW rotation performance.

Built to match OEM fitment and many common aftermarket part numbers, this Gen 3 clutch from 8TEN is designed to swap into Ferris SRSZ series machines, numerous IS and FW models, and a wide range of Bad Boy Maverick, Rebel, Revolt, Rogue, Outlaw, and ZT mowers. It replaces Warner and other branded clutches and targets owners who need dependable engagement, improved overheat protection, and shorter stopping distances compared with older clutch generations.

Will this clutch fit my Ferris or Bad Boy mower?

Yes — the 8TEN Gen 3 is made to be compatible with many factory applications and common replacement part numbers. Confirm your machine’s model and crankshaft size before purchase to ensure correct fit.

• Matches OEM and aftermarket references: Ferris 5100084, 5105090/5105090YP and Bad Boy 70-1000-00.
• Direct fit for Warner models 5218-114 and 5218-220 and replaces Stens 82-501.
• Crankshaft size: 1-1/8 inch; Pulley outer diameter: 6.10 inch; Rotation: CCW.

How does the Gen 3 clutch improve performance over earlier designs?

This third-generation unit focuses on thermal protection and faster stopping. The integrated 370° auto thermal cutoff reduces risk of heat-related damage, while an enlarged brake system cuts stopping time roughly 20% compared with Gen 2 clutches.

• 370° auto thermal cutoff for enhanced overheat protection.
• Enlarged brake components for quicker blade stop times.
• Durable construction tuned to withstand frequent engagement cycles.

What electrical and mechanical specs should I check before installing?

Verify the clutch rotation direction, crankshaft dimension, and pulley size to ensure compatibility. Also confirm that your mower accepts the specific mounting style and electrical connection used by this clutch.

• Rotation: counterclockwise (CCW).
• Crankshaft diameter: 1-1/8 inch; Pulley OD: 6.10 inch.
• Intended for the listed Ferris and Bad Boy models; check wiring and mounting alignment prior to install.

What routine checks and maintenance keep the clutch working well?

Regular inspection and basic maintenance extend clutch life and preserve braking performance. Keep the unit clean, check for proper electrical connections, and inspect the brake surface for wear.

• Keep the clutch free of debris and grass buildup for consistent engagement.
• Inspect electrical wiring and connectors for corrosion or loose terminals.
• Monitor brake pad/surface condition and replace the clutch if wear is excessive.

Who this is for: Lawncare professionals, fleet managers, and homeowners with compatible Ferris or Bad Boy zero-turn mowers who want a reliable, OEM-style replacement with improved thermal protection and faster blade stop times. Choose the 8TEN Gen 3 clutch if you need straightforward bolt-on compatibility for multiple Ferris/Bad Boy models, upgraded overheat resistance, and better braking than earlier clutch generations.