AHL 157 Oil Short Filter for KTM 690 SMC/DUKE 690 2008-2011 High performance design for outstanding filtration Size:O.D. 41mm & Height 52mm Replace Parts Number KN157 & HF157 Ideal for high-end synthetic motor oil and allow high oil flow rates Quality Assurance!If you are not satisfied with our products,we accept all of the return,replacement or refund requests