Maxima BCA-1002-00 ProFilter Black Billet Oil Filter Cover Fits: Honda CRF450R 02-08, CRF450X 05-09, TRX450R 06-09 ProFilter billet oil filter covers are engineered to increase oil flow, helping to cool hot running 4-stroke engines Built from military-grade materials, these billet covers stand up to the test 3D CAD designed for increased flow rates and CNC machined from 6061-T6 billet aluminum Precision fit and lightweight, with a durable sub-surface anodized finish