S&S Cycle M-Eight Flywheel Assembly Tapered Wrist Pin Stroke Engine Crankshaft

S&S Cycle M-Eight flywheel assemblies with tapered wrist pin connecting rods are complete replacement or performance crankshaft assemblies for M-Eight engines. Often called a crankshaft, flywheel set or crank assembly, each unit is built in the USA and machined and balanced for smooth, reliable engine operation.

Key Features:

• Complete assembly that includes the flywheels, crankpin and connecting rods
• Tapered wrist pin connecting rod design
• Precision machining and consistent balance for smooth running
• Heat-treated 4140 material is harder and stronger than stock
• High-strength connecting rods suit use with gear drive cams
• Standard S&S tapered crankpin and pinion shaft make servicing easier
• Designed using Finite Element Analysis (FEA) to eliminate weak spots
• No welding required

This product line gives M-Eight builders a durable, well-balanced bottom end for rebuilds and performance upgrades. The assemblies are available in several stroke lengths and configurations, so you can select the one that matches your build.