03-05 YZF450 Q4 W/SA MUFFLER, FMF 044199 EXHAUST SILENCER YAMAHA YZ450F 2003-2005WR450F 2003-2006 Part No. 06-1728. With the Q4 you don’t need to hear the power, just feel the power! FMF - 044199. Item ID: 044199.
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