FMF Q4 Hex Spark Arrestor For Yamaha WR450F (12-15) | 044398 wash Soft compound is used for

Soft compound is used for the outer diameter of the grip

flex like stock and even have the YZF's factory rubber mounting system

144 SX (2007-2008)

Only weigh 9 to 20 ounces

FMF Q4 Hex Spark Arrestor For Yamaha WR450F (12-15) | 044398 wash Soft compound is used forFitment: Make Model Year YAMAHA WR450F 12 15 FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you dont need to hear the power, just feel the power! Less sound equals more ground Meets USFS and FIM World Enduro sound regulations Power