FMF Powercore 4 Hex Muffler Yamaha WR250F ('20-'21) | 044471 offroad TMD invented the plastic case

TMD invented the plastic case saver and has proven to not damage the cases like aluminum

1997 - KLF300C Bayou 4X4 [SRA]

Spare clear lens included

front profile provides the best feel and confidence when traction matters the most

2000-2002 Yamaha YZ426F

FMF Powercore 4 Hex Muffler Yamaha WR250F ('20-'21) | 044471 offroad TMD invented the plastic caseWhen designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won't break the bank. Overall increase in power and torque. Durable stainless steel and aluminum construction. Space Age internal packing material for maximum longevity. Internal shape of core