Maxima BCA-5001-00 ProFilter Black Billet Oil Filter Cover Fits: KTM 250 SX-F 05-11, 450/520 SX-F 00-06, 250/400/450/520/525 EXC/XC/XC-W/MXC 00-07 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