I called FMF to find out what this pipe fits.  They verified that this FMF part number 230295 Fatty pipe fits the 1991-1997 Kawasaki KX80.  This pipe is in great condition, but it does have some surface rust on inside radius of the center cone, and some rust around the pipe spring mounts and pipe mount.  The most noticeable dent is 1 3/4" long on the second curve of the expansion chamber where it goes upward, and a small dent on the outside cone and where the pipe struck the motor on the inside center cone.  Please check out the photos to see these small blemishes.   

With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance. The Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you’re looking for.

-More tractable power, improved throttle control

-Provides power gains throughout entire power band

-Carbon steel with a nickel plated finish for maximum durability

-FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance.

-Can be used with FMF or stock silencer (unless noted)

-Our most popular 2-stroke pipe