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Part Number:
100-0104

With a name like "Bark Box®," Westcoast Saw lets you know exactly what you're getting! This muffler cover is constructed out of stainless steel and hand TIG welded. It also has a spark arrester built in. Made in the USA.
Expect cooler running temperatures, a rowdy sound, and 6-10% horsepower gain.
Installation Note: If your saw is M-tronic it will be tuned in by the third or fourth cut after installation. If your saw is non M-tronic, we recommend re-tuning after installation.
Bark Boxes are compatible with 2-piece muffler covers only.
Specs
Ⓓ CANADA DESIGN REG. NO. 210518, WESTCOAST SAW, LLC
Stihl® is a registered trademark of Stihl® Incorporated and is used only to describe their products.
Universal Power Port | Top Handle Mufflers | Clutch Cover For Select Stihl Saws
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It works and looks great, sounds even better. Nice job!
I installed the bark box on my 500i. I love the sound. Its hard to tell if it added any power. It already has plenty to begin with. Mainly bought it to help the saw run cooler. Only ran a tank of fuel so far. I love it. And it looks badass. It sure draws attention when cutting in town. Thats how I get most of my jobs. Thanks guys
Great sound! Made an already good saw even better! Easy to install! Looks mean as hell too