Set of (5) new valve tappets buckets for 2012 WR450F, 1998-2000 WR400F, and 2001-2002 WR426F. Precision ground and hardened chromoly steel. These are aftermarket replacements for 3FV-12153-10-00 buckets and measure a nominal 22.5mm outer diameter. Please email me with questions. Quantity discounts available. These fit many other machines. Free first class USPS shipping!