{"product_id":"spark-exhaust-spring-83mm-rubber","title":"Spark Exhaust Exhaust Spring 83 mm With Rubber Sleeve Universal MOLLA06","description":"\u003cp\u003eEighty-three millimetres, sleeved in rubber. One euro more than the bare version, and the difference between a quiet joint and a buzzing one.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExhaust spring, 83 mm, with a rubber sleeve.\u003c\/li\u003e\n\u003cli\u003eThe longer of Spark's two spring lengths.\u003c\/li\u003e\n\u003cli\u003eSpark part number MOLLA06, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat the Rubber Does\u003c\/h2\u003e\u003cp\u003eA bare spring under tension against a hot pipe resonates. At idle it produces a metallic buzz that sounds like something loose, and on a quiet machine it is the noise the owner keeps chasing.\u003c\/p\u003e\u003cp\u003eThe sleeve damps it. That is the whole function, and it is worth a euro on any motorcycle that is ridden on the road.\u003c\/p\u003e\u003ch2\u003eWhere It Does Not Belong\u003c\/h2\u003e\u003cp\u003eImmediately downstream of a collector, where the temperature is highest. Rubber has a limit, and a sleeve that has cooked leaves a residue on the pipe and stops damping anything.\u003c\/p\u003e\u003cp\u003eBare springs for the hot end, sleeved for everything after it, is the usual arrangement.\u003c\/p\u003e\u003ch2\u003eTwo Per Joint\u003c\/h2\u003e\u003cp\u003eOpposing sides, both the same. Mixing a sleeved spring with a bare one on the same joint gives unequal tension and lets the joint sit crooked.\u003c\/p\u003e\u003ch2\u003eThe Shorter Version\u003c\/h2\u003e\u003cp\u003eMOLLA07 is the 63 mm spring with the same sleeve, for joints where the hooks sit closer together.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618356519178,"sku":"MOLLA06","price":19.0,"currency_code":"SAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/698b5fa5d7074_b542e252-8d0b-4c61-b0a7-f398728803df.png?v=1788354408","url":"https:\/\/inter-pace.com\/en-sa\/products\/spark-exhaust-spring-83mm-rubber","provider":"Inter-Pace","version":"1.0","type":"link"}