Hot Cams Titanium Exhaust Valve for 2003-2009, 2011-2015 Yamaha WR 450 F & More - 8400008-1

The Hot Cams Titanium Exhaust Valve 8400008-1 is designed for the Yamaha models listed below. It provides an application-specific valvetrain or timing-system component while keeping the product tied to the correct manufacturer part number.

This Hot Cams titanium exhaust valve is an application-specific replacement for the listed cylinder head. It is intended for valvetrain rebuilding where the correct valve position, material, stem dimensions, installed height, seat contact, and clearance are confirmed before assembly.

Features

• Titanium valve construction
• Exhaust valve position
• Application-specific cylinder-head fitment
• Designed for valve replacement and complete cylinder-head service

Specifications

• Brand: Hot Cams
• Product Type: Valve Exhaust Titanium
• Valve Position: Exhaust
• Valve Material: Titanium
• Manufacturer Part Number: 8400008-1

Vehicle Fitment

Compatible Make(s): Yamaha

• WR 450 F (2003-2009, 2011-2015)
• YFZ 450 (2004-2009, 2017)
• YFZ 450 R (2009-2021)
• YFZ 450 R SE (2009-2021)
• YFZ 450 SE (2005-2008)
• YFZ 450 V Bill Balance Edition (2006-2007)
• YFZ 450 X (2008, 2010-2011)
• YZ 450 F (2003-2009)

Fitment Note: Confirm the exact year, model, engine, valve-train configuration, and required component quantity before ordering. Cam timing, valve lash, installed height, spring clearance, and related engine measurements must be verified during installation where applicable.