S&S Cycle Flywheels — 1984-1999 Harley-Davidson

S&S Cycle flywheel assembly for 1984-1999 Harley-Davidson Evolution big twins, featuring 4-1/4" stroke and 8-1/2" diameter machined from heat-treated steel forgings. Includes premium S&S mainshafts and heavy-duty 7.440" connecting rods, dynamically balanced for stock 80" cast pistons.

Features

• CNC machined from heat-treated steel forgings
• Stronger than cast iron or late-style steel flywheels
• Dynamically balanced assembly
• Premium S&S mainshafts included
• Heavy-duty 7.440" connecting rods

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 32-2239
• Stroke: 4-1/4"
• Diameter: 8-1/2"
• Weight: 36.16 lb
• Category: Drivetrain / Flywheels

Fitment

Fits 1984-1999 Harley-Davidson Evolution big-twin engines and S&S 80" V80 engines.

Frequently Asked Questions

What engines do these flywheels fit?

1984-1999 Harley-Davidson Evolution big twins and S&S 80" V80 engine builds.

Are they balanced for stock pistons?

Yes — these flywheels are dynamically balanced for stock 80" cast pistons.

What's included in the assembly?

Complete flywheel assembly with premium S&S mainshafts and heavy-duty 7.440" connecting rods ready to install.

How do these compare to stock flywheels?

CNC machined from heat-treated steel forgings, they are stronger and more durable than original cast iron or late-style steel flywheels.