🔧 YFZ450 Cylinder Head Rebuild Kit – OEM-Spec Cams & Valvetrain (Carb Models Only)

Need to refresh your YFZ450 top end without blowing the budget? This kit includes everything you need to rebuild your head using OEM-spec aftermarket parts. Perfect for stock rebuilds, this set includes standard-spec cams and durable valvetrain components—no tuning or head mods required.

✅ What’s Included:

• Camshafts: Standard-spec aftermarket intake & exhaust cams (OEM replacement, no performance gain)

• Valves: Aftermarket steel intake & exhaust valves

• Springs: Aftermarket valve springs (designed to use OEM retainers and collars)

• Valve Guides: Kibblewhite bronze valve guides

• Valve Seals: Kibblewhite Viton valve stem seals

• Hardware:

  • Valve keepers

  • Aftermarket buckets/tappets (OEM equivalent)

📦 Fitment:

Compatible with all Yamaha YFZ450 carbureted models and many WR/ YZ450F heads using the same architecture:

YFZ450 (Carb Models Only)

• 2004–2013 YFZ450

• 2004 YFZ450LE (Limited Edition)

• 2005–2007 YFZ450SE (Special Edition)

• 2007 YFZ450SE2 (Special Edition II)

• 2008 YFZ450SP / SP2

• 2006–2007 YFZ450V (Bill Ballance Edition)

• 2012–2013 YFZ450W (Custom Graphics)

Also Compatible With:

• 2003–2005 Yamaha YZ450F

• 2003–2006 Yamaha WR450F

🛡️ Warranty Info:

All components are brand new and come with the original manufacturer’s warranty.*

• We strongly recommend professional installation by a qualified mechanic

• Warranty does not cover issues related to improper installation, tuning, break-in, or misuse

• Any warranty claim must include return of the part for inspection—no exceptions