Put this pipe on my CRF250X, easy to install, sounds great, gave good power, and looks waaaaaay better than the stock pipe, best pipe i could find for the buck! If you are hesitant... don't be!
When designing the PowerCore 4, FMF looked at their 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.
Note: For closed course competition use only. Not intended for street use.