S&S CYCLE Flywheel Assembly for S&S V-Series Motor — 124", 4-5/8" stroke – 84-98 Touring, 85-99 Softail, 91-99 Dyna, 85-86 Big Twin, 85-94 FXR, 99 CVO

🔧⚙️ This flywheel assembly replaces the original flywheels in S&S® 124" V124 engines for '84–'99 Big Twin motorcycles, providing exceptional strength and precision for high-performance and stroked applications.

• Pinion and sprocket shafts are forged as integral parts of the flywheels for maximum durability.
• The only joints are where the 1.671" diameter connecting rod crankpin is pressed into the flywheels, reducing potential failure points.
• CNC machined from heat-treated, closed-die steel forgings that are 114% stronger than late-style stock steel flywheels.
• Fully assembled with premium quality heavy-duty 7.667" connecting rods featuring full-width wrist pin ends and dynamically balanced for smooth operation.
• Assembly is trued to less than .0005" runout on pinion and sprocket shaft bearing surfaces to enable higher rpm capability.
• Three-piece design with the left side flywheel notched for the crank position sensor.
• Balanced for stock bore and 3-5/8" stroker pistons to support stroker builds and tuned power delivery.

Engineered for durability and precision, this flywheel assembly is ideal for builders and riders seeking a reliable upgrade for S&S V-series performance motors.