{"product_id":"performance-muffler-cover-fits-stihl-400-1","title":"Performance Muffler Cover – Fits Stihl 400.1","description":"\u003cp data-start=\"0\" data-end=\"73\"\u003e\u003cstrong data-start=\"0\" data-end=\"73\"\u003eAerospace Grade Performance Exhaust System for the new STIHL MS 400.1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"75\" data-end=\"430\"\u003eEnhance power and improve engine cooling with this precision engineered exhaust system designed for the STIHL MS 400.1. Made from lightweight 6061 T6 billet aluminum, a high strength aerospace alloy known for excellent heat dissipation, the one piece muffler cover optimizes exhaust flow while helping to keep your engine cooler and extend component life.\u003c\/p\u003e\n\u003cp data-start=\"432\" data-end=\"574\"\u003eProudly manufactured in the USA and backed by a lifetime warranty, this exhaust system delivers lasting durability under demanding conditions.\u003c\/p\u003e\n\u003cp data-start=\"576\" data-end=\"838\"\u003e\u003cstrong data-start=\"576\" data-end=\"626\"\u003eOutlet Direction (Facing Bar or Facing Recoil)\u003c\/strong\u003e\u003cbr data-start=\"626\" data-end=\"629\"\u003eFacing Bar means the exhaust outlet points toward the guide bar side of the saw. Facing Recoil means it points toward the pull start side. This is strictly operator preference and has no effect on performance.\u003c\/p\u003e\n\u003cp data-start=\"840\" data-end=\"872\"\u003e\u003cstrong data-start=\"840\" data-end=\"861\"\u003eCompatible Models\u003c\/strong\u003e\u003cbr data-start=\"861\" data-end=\"864\"\u003eMS 400.1 \u0026amp; MS 363 \u003c\/p\u003e\n\u003cp data-start=\"874\" data-end=\"886\"\u003e\u003cstrong data-start=\"874\" data-end=\"886\"\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"888\" data-end=\"1186\"\u003e• One piece muffler cover CNC machined from 6061 T6 billet aluminum\u003cbr data-start=\"955\" data-end=\"958\"\u003e• Stainless Steel Intermediate Plate\u003cbr data-start=\"994\" data-end=\"997\"\u003e• Spark arrestor screen with aperture size compliant with USFS specifications\u003cbr data-start=\"1074\" data-end=\"1077\"\u003e• High Temperature Gasket Made in the USA\u003cbr data-start=\"1118\" data-end=\"1121\"\u003e• Longer top screws with vibration resistant Belleville washers\u003c\/p\u003e\n\u003cp data-start=\"1188\" data-end=\"1461\"\u003e\u003cstrong data-start=\"1188\" data-end=\"1215\"\u003eDyno Proven Performance\u003c\/strong\u003e\u003cbr data-start=\"1215\" data-end=\"1218\"\u003eTested on a completely stock saw with no modifications other than the muffler cover. Results showed a 7.82% increase in horsepower and a 6.5% increase in torque.\u003cbr data-start=\"1379\" data-end=\"1382\"\u003ePerformance gains will vary depending on the saw and the level of modification.\u003c\/p\u003e\n\u003cp data-start=\"1463\" data-end=\"1485\"\u003e\u003cstrong data-start=\"1463\" data-end=\"1485\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1487\" data-end=\"1654\"\u003e• Apply thread locker on all mounting screws for secure, vibration resistant assembly\u003cbr data-start=\"1572\" data-end=\"1575\"\u003e• Post installation tuning or recalibration is required for optimal performance\u003c\/p\u003e\n\u003cp data-start=\"1656\" data-end=\"1807\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1656\" data-end=\"1668\"\u003eWarranty\u003c\/strong\u003e\u003cbr data-start=\"1668\" data-end=\"1671\"\u003eLifetime warranty covers defects in materials and workmanship under normal use. Excludes misuse, neglect, or unauthorized modifications.\u003c\/p\u003e","brand":"Undaunted Manufacturing","offers":[{"title":"Facing Bar","offer_id":51389343170871,"sku":"PERFORMANCE_MUFFLER_COVER_FITS_STIHL_400_1_FACING_BAR","price":145.0,"currency_code":"USD","in_stock":true},{"title":"Facing Recoil","offer_id":51389343203639,"sku":"PERFORMANCE_MUFFLER_COVER_FITS_STIHL_400_1_FACING_RECOIL","price":145.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/4570\/2199\/files\/IMG_8006.jpg?v=1773427352","url":"https:\/\/undauntedmfg.com\/products\/performance-muffler-cover-fits-stihl-400-1","provider":"Undaunted Manufacturing","version":"1.0","type":"link"}