88-04 KAWASAKI KX500: FMF Gnarly Woods 2-Stroke Pipe (10) The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain. When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for you.All pipes are electro-nickel plated for a non-chip finish that will not discolor.Nickel plating is an FMF trade Not intended for street use.Detailed Specifications:Type: Pipe.Weight: 7.0 pounds.