Had to go with the bigger bore baffle in my Fat Cat, so the stock one is up for sale. I really like the sound of this baffle, but since I changed to a 117", this one won't flow enough. It is fine for up to 103" according to D&D's engineering dept. From D&D, 91.00 plus shipping. This one with around 2k miles on it, 50.00 plus shipping. Fits Fat Cat full system models 412, 504, 411, 525, 582, 514, 583, 496, 579, 580 (from their website).