Component Type: Complete 3-Piece Forged Crankshaft Assembly.Application: Formed specifically for professional gasoline logging chainsaws, most commonly matching the design profiles of Husqvarna high-power series (e.g., 365, 371, 372/372XP) or Stihl MS 380 / MS 381 platforms.Material: High-tensile forged alloy steel for optimal heat resistance and counterweight balance.Connecting Rod: Includes pre-installed copper/bronze coated connecting rod paired with heavy-duty needle roller bearings on the crankpin.Drive Configuration: Threaded and tapered shaft ends engineered to precisely mount the engine flywheel on one side and the centrifugal clutch/sprocket assembly on the other.