VALVE GUIDE EXHAUST YZF450 03-, KIBBLEWHITE 80-80230, Yamaha YFZ 450 2004-2009 YFZ 450X 2008-2011 YFZ 450R 2009-2019 YFZ 450SE 2010-2019 WR 450 2003-2015

This standard exhaust valve guide is made from C674 manganese bronze and is designed for a range of Yamaha applications including WR, YZ, and YFZ 450 models. Engineered for affordability and ease of machining, it provides precise fitment with reduced wear resistance compared to C630 bronze. Featuring a standard outside diameter of 0.3957″, it is optimised for exhaust valve use.

Features

• Made from C674 manganese bronze

• Designed for exhaust valve applications

• Standard guide diameter: 0.3957″

• Easily machinable using standard tools

• Maintains precise KPMI® tolerances for fit and function

Specifications

• A: 0.350″ (8.89 mm)

• B: 0.385″ (9.78 mm)

• C: 0.510″ (12.96 mm)

• D: 0.680″ (17.28 mm)

• E: 0.430″ (10.93 mm)

• F: 0.1961″ (4.98 mm)

• G: 0.3957″ (10.05 mm)

Cross-Reference OEM Part Numbers

• Part No. 65-940+000

• Kibblewhite #80-80230

Vehicle Fitments

• Yamaha YFZ450 2004–2009

• Yamaha YFZ450X 2008–2011

• Yamaha YFZ450R 2009–2019

• Yamaha YFZ450SE 2010–2019

• Yamaha WR450 2003–2015

• Yamaha YZ450F 2003–2009