CRANKSHAFT ASSY 06-13 YFZ450, HOTROD 4073 YAMAHA ATV

Fits Yamaha YFZ450 models from 2004 to 2013, excluding fuel-injected R or X models. The crankshaft assembly features a heavy-duty design, with a +1.4mm stroke for 2004-2005 models to achieve a true 450cc displacement. For 2006-2008 models, the standard stroke design is retained. The crankshaft uses a stock piston for straightforward installation. When paired with Cylinder Works #21001-K01, the engine's displacement increases to 478cc.

Features:

• Heavy-duty crankshaft design with precise engineering.


• Factory-assembled and trued to meet or exceed OEM specifications.


• Includes Hot Rods connecting rod and inner crankshaft webs.


• Fully rebuildable for long-term reliability.


• Compatible with stock pistons for quick installation.


• Increases engine stroke by 1.4mm (04-05 models) to achieve 450cc displacement.


• Provides 478cc displacement when used with Cylinder Works #21001-K01.


• Not compatible with fuel-injected R or X models.

Specifications:

• Final displacement: 450cc (04-05 models, with +1.4mm stroke).


• Stroke: 63.400mm.


• Increased engine stroke: 1.400mm.


• Engine type: 4-cycle.


• Heavy-duty: Yes.


• Connecting rod side clearance: 0.2-0.55mm.


• Completely bolt-in and ready for use.

Cross-reference OEM Part Numbers:

• Yamaha: 5TG-11400-10-00


• Yamaha: 5TG-11400-30-00


• Yamaha: 5TG-11400-31-00


• Yamaha: 5TG-11412-10-00


• Yamaha: 5TG-11412-30-00


• Yamaha: 5TG-11422-10-00


• Yamaha: 5TG-11422-30-00

Vehicle Compatibility:

• 2004-2013 Yamaha YFZ450


• 2006 Yamaha YFZ450SP 50th Anniversary Edition


• 2006-2007 Yamaha YFZ450BB Bill Ballance Edition


• 2007 Yamaha YFZ450SE Special Edition


• 2007 Yamaha YFZ450SE2 Special Edition 2


• 2008 Yamaha YFZ450SP Special Edition


• 2008 Yamaha YFZ450SP2 Special Edition 2

Part Number: 56-281