{"product_id":"p-127710","title":"SHORT CONE MEGAPHONE MUFFLER Chrome for SR400\/500 ('78-'08) - GOODS ESPECIALLY","description":"\u003cbr\u003e\u003cp class=\"midashi\"\u003eGOODS ESPECIALLY\u003cbr\u003eSR slip-on muffler \"MEGAPHONE\" series\u003c\/p\u003e\u003cbr\u003eGOODS original megaphone silencer made of steel with a chrome-plated finish.\u003cbr\u003eA wide lineup of end caps, from the classic trumpet type to the racy open end.\u003cbr\u003eDeveloped in-house, this product uses a single expansion chamber + glass wool sound-absorbing design for a structure that resists deterioration over time.\u003cbr\u003e\u003cbr\u003e\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00192_img_1.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi\"\u003eGOODS DESIGN\u003cbr\u003eGOODS original design\u003c\/p\u003e\u003cbr\u003eA GOODS original design based on the UNIVERSAL mufflers of the past.\u003cbr\u003eWe offer a wide lineup, from the classic trumpet type to the racy open end\u003cbr\u003e\u003cbr\u003e\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00192_img_2.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00192_img_3.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi\"\u003eHighly durable.\u003cbr\u003eGOODS's original sound-absorbing design\u003c\/p\u003e\u003cbr\u003eConventional imported universal mufflers, such as reverse cone mufflers, use a thick straight perforated core with wool, so many lose their silencing ability quickly,\u003cbr\u003ebut this product, developed in-house, uses a single expansion chamber + glass wool sound-absorbing design.\u003cbr\u003eBecause it relies less on the wool, the structure resists deterioration over time.\u003cbr\u003e\u003cbr\u003e\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00193_img_5.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cfont color=\"#FF0000\"\u003e*\u003c\/font\u003eThe wool can easily be repacked with our \u003ca href=\"https:\/\/www.goods-co.net\/products\/detail.php?product_id=102896\" target=\"_blank\"\u003eGlass Wool (Part No. G4-00093)\u003c\/a\u003e 、\u003ca href=\"https:\/\/www.goods-co.net\/products\/detail.php?product_id=102897\" target=\"_blank\"\u003eStainless Wool (Part No. G4-00092) \u003c\/a\u003eproducts\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi\"\u003eJust the right volume.\u003cbr\u003eSingle expansion chamber + glass wool structure\u003c\/p\u003e\u003cbr\u003eConventional universal mufflers often have a wool-only straight-through design that silences poorly when the throttle is snapped open and tends to be very loud,\u003cbr\u003ewhereas our original \"MEGAPHONE\" uses an expansion chamber + a restricted straight path to deliver strong silencing even when the throttle is snapped open.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eWe also refined the shape and structure of the end cap to reduce wind noise and the harsh tone of conventional products.\u003cbr\u003e\u003cfont color=\"#FF0000\"\u003e*\u003c\/font\u003eWithout the optional silencing baffle\u003cbr\u003e\u003cbr\u003e\u003ciframe width=\"600\" height=\"400\" src=\"https:\/\/www.youtube.com\/embed\/6cnJbyMhsNc?si=Vep66DeO5A2HPgnJ\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003cbr\u003e*Measured on an SR400　\u003cbr\u003e1200rpm:87.4db\u003cbr\u003e3500rpm:98.7db\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi\"\u003eAn optional dedicated baffle is also available\u003c\/p\u003e\u003cbr\u003eFor riders who want it even quieter, we also offer an additional silencing baffle dedicated to the MEGAPHONE series.\u003cbr\u003eEasy to install: just remove the end cap and secure it with one bolt.\u003cbr\u003e\u003cbr\u003e\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00187_img_3.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003e*Measured on an SR400　\u003cbr\u003e1200rpm:82.4db\u003cbr\u003e3500rpm:92.0db\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003chr size=\"1\" align=\"left\" width=\"100%\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi2\"\u003eSize\u003c\/p\u003e[Silencer body]\u003cbr\u003eLength: approx. 446mm\u003cbr\u003eMax diameter: approx. φ95mm\u003cbr\u003eInlet diameter: φ45.3mm\u003cbr\u003e\u003cbr\u003e[Joint]\u003cbr\u003eOverall length: 160mm\u003cbr\u003eφ45mm straight section: 120mm\u003cbr\u003eExhaust pipe side inner diameter: φ41.3mm\u003cbr\u003eSilencer side outer diameter: φ45mm\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi2\"\u003eMaterial\u003c\/p\u003eSteel\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi2\"\u003eContents\u003c\/p\u003eSilencer x1\u003cbr\u003eEnd x1\u003cbr\u003eJoint x1\u003cbr\u003eBracket x1\u003cbr\u003eBand x2\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi2\"\u003eFitment\u003c\/p\u003eUniversal\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi2\"\u003eSound level (reference)\u003c\/p\u003e*Measured on an SR400\u003cbr\u003e1200rpm:87.4db\u003cbr\u003e3500rpm:98.7db\u003cbr\u003e\u003cbr\u003e*With optional baffle installed\u003cbr\u003e1200rpm:82.4db\u003cbr\u003e3500rpm:92.0db\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cp class=\"midashi3\"\u003ePlease note\u003c\/p\u003e\u003cfont color=\"#FF0000\"\u003e*\u003c\/font\u003eRacing use only, not for use on public roads\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cdiv class=\"goods-faq\"\u003e\n\u003cp class=\"goods-faq-h\"\u003eFAQ\u003c\/p\u003e\n\u003cdiv class=\"goods-faq-item\"\u003e\n\u003cp class=\"goods-faq-q\"\u003e\u003cspan\u003eQ \u003c\/span\u003eCan it be made even quieter with the separately sold baffle installed?\u003c\/p\u003e\n\u003cdiv class=\"goods-faq-a\"\u003e\n\u003cspan\u003eA\u003c\/span\u003e\u003cdiv\u003e\n\u003cimg class=\"fancyzoom\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/G4-00193_img-_5_-1.jpg\" width=\"600\"\u003e\u003cbr\u003e\u003cbr\u003eExhaust exits the pipe through passage 1, returns inside through passage 2, and then flows to the rear end where the wool and baffle are.\u003cbr\u003e\u003cbr\u003eGreen circle: Passage 1  Blue line: Partition  Red circle: Passage 2\u003cbr\u003e\u003cbr\u003eYou can make it quieter by blocking holes in passages 1 and 2 to reduce the open area.\u003cbr\u003eThe easy way is to wrap metal tape around it a few times, but you could also weld them shut or, if your tools can reach, use bolts and nuts.\u003cbr\u003e\u003cfont color=\"#FF0000\"\u003e*\u003c\/font\u003eBlocking too much will noticeably reduce power,\u003cbr\u003eso if you block them, we recommend up to about 30% of each passage.\u003cbr\u003e\u003cfont color=\"#FF0000\"\u003e*\u003c\/font\u003ePassage 1 has 32 holes and passage 2 has 28 holes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c!--\/goods-faq--\u003e\u003cbr\u003e\u003chr size=\"1\" align=\"left\" width=\"100%\"\u003e","brand":"GOODS","offers":[{"title":"Default Title","offer_id":67446435315870,"sku":"G4-00196","price":29700.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/3712\/7070\/files\/0000027710000.jpg?v=1790760503","url":"https:\/\/www.goods-co.net\/en\/products\/p-127710","provider":"GOODS ONLINE SHOP","version":"1.0","type":"link"}