{"product_id":"spark-exhaust-stainless-tube-54mm-500mm","title":"Spark Exhaust Stainless Steel Tube Ø 54 × 1.0 mm 500 mm Universal G9003","description":"\u003cp\u003eFifty-four millimetres — the diameter Spark builds its own three-quarter kits around on the Yamaha R1. If you are matching to one of those systems, this is the tube.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStraight exhaust tube, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 54 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003e500 mm long.\u003c\/li\u003e\n\u003cli\u003eThe diameter used in Spark's own d.54 stainless manifold kits.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9003, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpark's Own d.54 Kits\u003c\/h2\u003e\u003cp\u003eSpark lists several articles specifically at this diameter: the stainless manifold of its three-quarter kits and the silencer groups that bolt to them. That is the clearest possible statement of what fifty-four is for — the collector section of a litre-class four.\u003c\/p\u003e\u003cp\u003eIf a project involves adapting one of those kits, ordering the same diameter as stock removes an adapter from the design.\u003c\/p\u003e\u003ch2\u003eFiller Rod\u003c\/h2\u003e\u003cp\u003eUse 308L for AISI 304. It is the standard match, it has the low carbon content that keeps chromium carbide from forming at the grain boundaries, and it is what makes the difference between a weld that lasts and one that goes rusty along the heat-affected zone.\u003c\/p\u003e\u003cp\u003eMild steel filler in a stainless joint will fail. It is worth saying because it happens.\u003c\/p\u003e\u003ch2\u003eDrumming\u003c\/h2\u003e\u003cp\u003eA large-diameter thin-wall tube is a drum. On a long unsupported run at this size, engine harmonics can set the tube ringing at particular revs — audible in the cabin of a car and audible to the rider on a motorcycle.\u003c\/p\u003e\u003cp\u003eThe cure is a mount in the middle of the run, or a short section of the next size sleeved over the worst of it.\u003c\/p\u003e\u003ch2\u003eLambda Bosses\u003c\/h2\u003e\u003cp\u003eIf the system needs an oxygen sensor, weld the boss before final assembly and put it at least three tube diameters downstream of a junction. Spark sells the bung separately as article SGATT139.\u003c\/p\u003e\u003ch2\u003eMarking Before Cutting\u003c\/h2\u003e\u003cp\u003eUse a fine permanent marker and a strip of paper wrapped round the tube for a square line. A scribed line on stainless is a stress raiser and a scratch you will still see after the system is finished; on a visible section of a custom exhaust that matters.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003e500 mm per article, uncut.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53617861230858,"sku":"G9003","price":700000.0,"currency_code":"VND","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/5c0fcb331f745_0589e22b-fc79-4027-92e8-0ee81015317c.png?v=1788362732","url":"https:\/\/inter-pace.com\/en-vn\/products\/spark-exhaust-stainless-tube-54mm-500mm","provider":"Inter-Pace","version":"1.0","type":"link"}