S&S CYCLE Flywheel Assembly — 8-1/2" diameter, 4-1/4" or 4-5/8" stroke – 84-86 Big Twin, 83-96 Touring, 94-95 Dyna, 84-94 FXR, 99 CVO, 84 Police, 85-89, 91, 93, 98 Softail

The Flywheel Assembly is made from high-strength forged steel and engineered for stock and high-performance custom applications.

• Special keyed 6° large-diameter tapered sprocket shaft for increased contact area and strength.
• Uses standard S&S tapered crankpin and pinion shaft for ease of service.
• 8-1/2" diameter with 4-1/4" or 4-5/8" stroke; kits come fully assembled, trued and balanced to stock 80" or 96" pistons.
• Includes flywheel, crankpin, and connecting rods; '90–'99 applications require a pinion shaft conversion kit.
• Compatible with S&S® V80 engine and made in the USA.

Complete, service-ready assembly for reliable performance. 🔩