{"product_id":"spark-exhaust-db-killer-rectangular-70mm-open","title":"Spark Exhaust dB Killer Rectangular 70 mm Open Universal G9920","description":"\u003cp\u003eThe short rectangular insert. Seventy millimetres instead of a hundred and fifty, and a much larger opening — forty-seven by twenty-six against forty-one by fifteen.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003edB killer for Spark rectangular silencers.\u003c\/li\u003e\n\u003cli\u003e59.8 × 36.5 mm outer, 47 × 26 mm internal opening.\u003c\/li\u003e\n\u003cli\u003e70 mm long.\u003c\/li\u003e\n\u003cli\u003eOpen type, no perforation.\u003c\/li\u003e\n\u003cli\u003eStainless steel, removable.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9920, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe Light Restriction\u003c\/h2\u003e\u003cp\u003eCompared with the long rectangular insert, this one barely narrows the exit: its opening is more than twice the area. What it does is take the sharpest edge off the note without costing the engine anything measurable.\u003c\/p\u003e\u003cp\u003eThat is the right choice when a machine is already close to a limit, or when the owner wants the exhaust civilised for a road ride rather than silenced for scrutineering.\u003c\/p\u003e\u003ch2\u003eSeventy Millimetres of Case\u003c\/h2\u003e\u003cp\u003eThe other reason to choose it is space. Not every rectangular silencer has a hundred and fifty millimetres of straight section behind the outlet; a shorter insert fits where a long one physically cannot.\u003c\/p\u003e\u003cp\u003eMeasure before ordering. It is the one check that decides which of the two articles you need.\u003c\/p\u003e\u003ch2\u003eTwo Inserts, One Family\u003c\/h2\u003e\u003cp\u003eSpark's rectangular cases take either this or G9915. The seat dimensions differ by less than a millimetre — 36.5 here against 35.8 there — so the outer body is not the distinguishing feature. Length and opening are.\u003c\/p\u003e\u003ch2\u003eFitting\u003c\/h2\u003e\u003cp\u003eFrom the outlet, silencer in place, hand tools. A rectangular insert can only go in one way round, which removes the most common way of getting a db killer wrong.\u003c\/p\u003e\u003ch2\u003eForty-Seven by Twenty-Six\u003c\/h2\u003e\u003cp\u003eThat opening is close to the full section of the outlet, which is what makes this the light restriction of the two. Most of what it removes is the hard edge at the top of the range rather than the volume underneath it.\u003c\/p\u003e\u003ch2\u003eLegal Position\u003c\/h2\u003e\u003cp\u003eWhere the silencer is homologated, the insert Spark supplied is part of the approved configuration and changing it puts the machine outside the certificate. Where the silencer is a racing article, no insert creates an approval. Both statements are worth reading twice before a technical inspection.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53617781670154,"sku":"G9920","price":52.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/65c4da779c83f_25ad3f70-0d04-4957-b370-2c1236bfd2dc.png?v=1788343246","url":"https:\/\/inter-pace.com\/en-us\/products\/spark-exhaust-db-killer-rectangular-70mm-open","provider":"Inter-Pace","version":"1.0","type":"link"}