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the one-piece muffler cover optimizes exhaust flow while helping to keep your engine cooler and extend component life
Engineered for increased power and improved engine cooling
Dyno Proven Performance
Lightweight & Durable: Built to withstand years of demanding use without adding unnecessary weight
Dyed Factory Plastics - Fits Stihl 661 type_exhaust the one-piece muffler cover optimizesGive your Stihl MS 661 a custom look without sacrificing factory fit and durability. These genuine OEM Stihl plastics are professionally dyed to deliver a clean, long lasting finish that won't peel, chip, or flake like paint. Unlike painted plastics, the dye penetrates the material itself, creating a more durable finish that stands up to the abuse of daily use in the woods and on the jobsite. The result is a factory quality appearance with a unique
