Motorcycle Engine Parts Piston Rings Kit Bore STD Size 95mm For WR426F WR450F YZ426F YZ450F YFZ450 YFZ450R WR 450 426 R F Material Type: Nodular Cast Iron Condition: Brand Design and Style: OEM Compatible Size: Bore Size: STD 95mm : Manufactured in Compatibility: Fits models including WR426F, WR450F, YZ426F, YZ450F, YFZ450, YFZ450R Specific model fitment includes WR426F from 2001 to 2002, WR450F from 2003 to 2015, YZ426F from 2000 to 2002, YZ450F from 2003 to 2009, YFZ450 from 2004 to 2005, and YFZ450R from 2007 to 2013 and 2014 to 2018 This piston rings kit is designed for use with specified motorcycle models.Constructed from nodular cast iron, the set is built to handle demanding operating conditions.The STD 95mm bore size supports proper engine function and performance.The design follows OEM specifications for direct replacement.The kit includes all necessary components for installation and is intended to restore or maintain engine compression and efficiency.