Flywheel Rotor Assy for Yamaha YZF-R1, FZ1, FZ8 (2004-2015) | 5VY-81450-00-00

Heavy-Duty Flywheel Rotor for Yamaha R1, FZ1 & FZ8

Protect your engine and restore your charging system. This high-performance Rotor Assembly is a precision-engineered replacement for Yamaha OEM part numbers 5VY-81450-00-00 and 2SH-81450-00-00. Designed for the high-revving 1000cc and 800cc engines, it ensures stable magnetic field generation for a more efficient and reliable electrical system.

This rotor is built to handle the impact and vibration of high-performance riding. Its design facilitates easier start-ups and improves overall cooling performance. Most importantly, this unit addresses common factory weaknesses by providing a stable and secure magnet configuration, preventing the costly engine damage often caused by original rotor failure.

Product Compatibility

• Yamaha YZF-R1: 2004, 2005, 2006, 2007, 2008
• Yamaha FZ1 (Naked & Fazer): 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
• Yamaha FZ8 (Naked & Fazer): 2011, 2012, 2013

Key Technical Specifications:

• OEM Reference: 5VY-81450-00-00, 2SH-81450-00-00
• Function: Optimizes magnetic field for stable power output
• Durability: High resistance to vibration, impact, and thermal stress
• Installation: Direct bolt-on replacement for factory unit

Why Upgrade Your Rotor?

• Engine Safety: Prevents the detachment of magnets, a known issue with original 2004–2008 R1 and FZ1 rotors that can lead to total engine failure.
• Consistent Charging: Ensures your stator produces a stable current, keeping your battery healthy and your electronics functioning perfectly.
• Precision Balance: Machined to exact tolerances to ensure smooth engine operation and reduce wear on the crankshaft.