Universal PowerCore 4 Spark Arrestor Slip-On (1.5in. to 2.0in. Inlet), Manufacturer: FMF Racing, PC4 UNIV S/A MFLR 1.5"-2.0" Universal PowerCore 4 Spark Arrestor Slip-On (1.5in. to 2.0in. Inlet) PC4 UNIV S/A MFLR 1.5"-2.0" Manufacturer: FMF Racing Photos are for reference only, please read title and product description carefully.