Without balancer gear. With full wristpin width connecting rods for use with S&S pistons. Comes fully assembled with flywheels; connecting rods; connecting rod bearings; pinion and sprocket shaft. Note: Required for installation of 923194 / 923193 131″ (4.250″ bore) and S&S 994438/994437 136″ (4.320″ bore) big bore cylinder and piston kits. Note: Balancer gear is not included. See 923271 for identical flywheel assembly with balancer gear installed.