FMF Powercore 4 Hex Muffler | 042362 Engine 39% nylon plastic & TPU

39% nylon plastic & TPU

80% Polyurethane 17% Polyester 3% Other

F/R - fits front and rear

1985 - ATC250ES Big Red

YAMAHA (16-21) YZ 250X

FMF Powercore 4 Hex Muffler | 042362 Engine 39% nylon plastic & TPUWhen 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