S&S Cycle Evolution Flywheel Assembly - 320-0477

Upgrade your S&S V-Series 124" engine with the S&S Cycle Flywheel Assembly. This high-performance assembly is designed to replace the original flywheels in '84-'99 Big Twin engines, delivering enhanced strength and reliability.

Description

The S&S Cycle Flywheel Assembly is engineered for superior performance and durability. The pinion and sprocket shafts are forged as part of the flywheel, eliminating weak points. CNC machined from heat-treated, closed die, steel forgings, these flywheels boast 114% greater strength than late-style stock steel flywheels. The assembly is fully assembled with premium quality S&S heavy-duty 7.667" connecting rods, featuring full-width wrist pin ends and dynamic balancing. Each assembly is meticulously trued to less than 0.0005" runout on pinion and sprocket shaft bearing surfaces, ensuring exceptional high-RPM capability. The three-piece design includes a left-side flywheel notched for a crank position sensor. Balanced for S&S stock bore and 3-5/8" stroker pistons, this flywheel assembly ensures optimal engine performance.

Features & highlights

• Replaces original flywheels in S&S 124" V124 engines for '84-'99 Big Twins, boosting performance and reliability.
• Forged pinion and sprocket shafts provide exceptional strength and eliminate potential weak points.
• CNC machined from heat-treated steel forgings for 114% greater strength compared to stock flywheels.
• Assembled with premium S&S heavy-duty 7.667" connecting rods for enhanced durability and performance.
• Dynamically balanced assembly ensures smooth operation and reduced vibration.
• Trued to less than 0.0005" runout, guaranteeing optimal high-RPM performance.
• Left-side flywheel is notched for crank position sensor, simplifying installation.

Technical specifications

• Brand: S&S Cycle
• Engine Type: S&S V-Series
• Displacement: 124"
• Stroke Length: 4-5/8"
• Connecting Rod Length: 7.667"
• Material: Steel
• Runout: Less than 0.0005"

Important to know

This flywheel assembly is designed as a direct replacement for the original flywheels in S&S 124" V124 engines for '84-'99 Big Twin models. Ensure proper installation by a qualified technician.