{"product_id":"spark-exhaust-bent-tube-180-degrees-45mm","title":"Spark Exhaust Bent Tube 180° U-Bend Ø 45 × 1.0 mm Stainless Steel Universal G9115","description":"\u003cp\u003eA full U at forty-five millimetres. One of only two diameters Spark bends through a hundred and eighty degrees, and a part that replaces two right angles and a weld.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMandrel-formed 180° U-bend, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 45 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eStraight tangents at both ends.\u003c\/li\u003e\n\u003cli\u003eOne of two diameters Spark bends this far; the other is 50 mm, article G9165.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9115, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere a Run Doubles Back\u003c\/h2\u003e\u003cp\u003eUnderseat exhausts, tight two-into-one work and the crossovers on some V-twins all need the pipe to turn completely around in a space where nothing else will fit. That is what this article is for.\u003c\/p\u003e\u003cp\u003eThe alternative is two ninety degree bends with a straight between them: three pieces, two welds, more length and a wider U. Where the room exists, the pair is more adjustable. Where it does not, only this works.\u003c\/p\u003e\u003ch2\u003eFixed Width, and Why That Is Fine\u003c\/h2\u003e\u003cp\u003eThe gap between the two legs of a U-bend is set by the tooling and cannot be changed. That sounds like a limitation and rarely is: the reason a run doubles back is almost always a physical obstacle, and the tightest possible U is what clears it.\u003c\/p\u003e\u003cp\u003eIf the design needs a wider U, that is the case for two right angles instead.\u003c\/p\u003e\u003ch2\u003eThe Most Demanding Bend to Form\u003c\/h2\u003e\u003cp\u003eA hundred and eighty degrees is twice as much forming as a right angle, on the same wall and the same mandrel. The outer heel stretches further and thins more; the inner heel has more material to compress without folding.\u003c\/p\u003e\u003cp\u003eIt is the reason Spark makes this angle in two diameters rather than fourteen, and the reason a workshop bender will not produce one at all.\u003c\/p\u003e\u003ch2\u003eCutting a U Into Two Corners\u003c\/h2\u003e\u003cp\u003eCut at the apex and a U-bend becomes two right angles, each with one straight tangent. On a build that needs two corners in the same plane, one article can supply both — and at fifty-one euro against two bends at thirty-eight, the arithmetic is worth checking before ordering.\u003c\/p\u003e\u003ch2\u003eDraining It\u003c\/h2\u003e\u003cp\u003eA U installed with the bend at the bottom is a trap: condensation collects at the low point and sits there between rides. On a road machine that is where the system rots from the inside. Where the layout allows, install the U with the curve uppermost, or drill a small drain at the low point.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark also builds 30°, 45° and 90° at this diameter, and a 500 mm straight length under article G9002.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618254020874,"sku":"G9115","price":51.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/G9165.png?v=1788360743","url":"https:\/\/inter-pace.com\/en-nl\/products\/spark-exhaust-bent-tube-180-degrees-45mm","provider":"Inter-Pace","version":"1.0","type":"link"}