FMF Q4 Spark Arrestor Slip-On Hexagonal Muffler 41516 for 05-17 Honda CRF 450X

  
FMF Racing 41516 Q4 Spark Arrestor Slip-On Hexagonal Muffler. The Q4 employs intricate chambers, baffles and proprietary multistage packing material. With the Q4 you don't need to hear the power, just feel the power! Less sound equals more ground. Power gains throughout the entire rpm range. Rugged design for off-road endurance.