• Replaces the original flywheels in S&S® 124" V124 engine for '84-'99 Big Twin
• Pinion and sprocket shafts are forged as part of the flywheel
• The only joints in the assembly are where the 1.671" diameter connecting rod crankpin is pressed into the flywheels
• CNC machined from heat-treated, closed die, steel forgings, which are 114% stronger than late style stock steel flywheels
• Fully assembled with premium quaility S&S® heavy duty 7.667" connecting rods, with full width wrist pin ends, and dynamically balanced
• Assembly is trued to less than .0005" runout on pinion and sprocket shaft bearing surfaces, making them capable of higher rpm
• Three piece design

Notes

• Left side flywheel is notched for crank position sensor.
• Balanced for S&S stock bore and 3-5/8" stroker pistons.