This Straightline Performance muffler is a great addition to your 2007 Ski Doo. It is a lightweight design that will help improve the overall performance of your snowmobile. Made in the United States, this muffler is designed to fit perfectly with your Ski Doo and will provide a great sound improvement. The part number for this muffler is 134-110 and it is compatible with a variety of Ski Doo models. Upgrade your snowmobile with this high-quality muffler today!