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When designing the PowerCore 4 HEX
The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range
-Engineered to assault the toughest terrain and conditions such as Erzberg
we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass
Huge horsepower gains throughout RPM range
Powercore 2.1 025315 YAMAHA-YZ250F-2009 When designing the PowerCore 4FMF is about moving forward faster. The all new PowerCore 2. 1 silencer is proof FMF is totally committed to 2 stroke progression. FMF loves 2 strokes, they ride 2 strokes, and they are devoted to delivering superior power to the 2 stroke faithful. Race tested, smooth power curve throughout the RPM range. Engineered to assault today's tracks and trails Larger diameter canister for more tunability and longer lasting packing life. Delivers a crisp,
US$ 115.00
US$ 3125.00
US$ 140.00
US$ 139.95
US$ 135.00
US$ 144995.00
