FMF Factory 4.1 pipe and Megabomb header 05-06 KTM250sxf: The Factory 4.1 is FMF Racing's premier performance exhaust system incorporating every conceivable technological advantage taken from 30 plus years of our racing heritage. It is the lightest system available with superior power and performance. Features exclusive proprietary chamber core and Powerbomb technology with factory forward engineering which centralizes mass improving handling. Titanium silencer available in natural titanium finish with titanium endcaps, midpipe and Powerbomb header. Customize with performance tuning inserts
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