S&S Flywheel Assembly - 4-1/2" Stroke - Full Wrist Pin - 114"/117" M8

The S&S Flywheel Assembly builds a strong, reliable bottom end for stock or high-performance engines. It is made from 4140 steel.

Fits Harley-Davidson Touring (2017-2023) and Softail (2018-2023) models. Check the fitment chart below to confirm your exact year and model.

• Perfect for gear drive camshafts
• Consistent balance and precision machining
• Balance gear is installed for easy installation
• Strong assembly eliminates need to weld crankpin
• Heat treated 4140 material is harder and twice as stong as stock
• Connecting rods are designed with Finite Element Analysis (FEA) to eliminate weak spots
• Includes flywheel, crankpin and connecting rods
• Made in the USA
• Not recommended for compression ratios higher that 10.0:1 for Tri Glide or other three wheel models (including conversion).
• Displacement is with S&S cylinders and pistons.