Attributes . Hour Meter Included. ITEM CONTENTS. 2614CD - 66.40 mm Ring Set. 804M06640 - Yamaha YZ250 99-18 ProLite 2614CD. B1003 - Top End Bearing 18 x 22 x 21.8mm. B1049 - Crank Pin Bearing 24 x 31 x 16.8mm KU. B5011 - Main Bearing 28 x 68 x 18mm. Crankshaft. CW18 - ROUND WIRE PIN LOCKS 18MM (PAIR). Ring - Set. S508 - PistonPin 18mm x 2.106in. NonChromed TW. W5768 - THRUST WASHERS(2) 24MM ID X .85MM. W5806 - CRANK PIN - HOLLOW - 24MM X 60MM. W5978 - TopEnd Gasket Kit Yamaha YZ250 02-18. W8062 - Wiseco Hour/Tach Meter Universal Mount. W8063 - Wiseco Hour Meter. WB1051 - Bottom End Gasket Kit Yam YZ250 99-18 . Names