{"product_id":"spark-exhaust-bent-tube-30-degrees-42mm","title":"Spark Exhaust Bent Tube 30° Ø 42 × 1.0 mm Stainless Steel Universal G9120","description":"\u003cp\u003eForty-two millimetres through thirty degrees. The odd size, in the shallowest angle — a bend bought when a factory system measures something other than a round number.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMandrel-formed 30° bend, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 42 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eSlides over 40 mm tube as a sleeve.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 42 mm straight tube, article G9008.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9120, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe Size Between the Sizes\u003c\/h2\u003e\u003cp\u003eMost suppliers stock forty and forty-five. Original-equipment exhausts do not confine themselves to those, and a factory pipe measuring forty-two is common enough that Spark keeps the size in the range.\u003c\/p\u003e\u003cp\u003eMatching exactly beats adapting. Two millimetres is around ten per cent of flow area, and it also saves a transition piece.\u003c\/p\u003e\u003ch2\u003eA Bend That Is Also a Sleeve\u003c\/h2\u003e\u003cp\u003eForty-two outside with a one millimetre wall gives forty inside, so a 40 mm tube slides straight into the end of this bend. That turns the joint into a slip fit rather than a butt weld with no machining at all.\u003c\/p\u003e\u003cp\u003eIt is a useful property of this specific diameter and it makes the bend worth having in a rack even on a project built entirely in forty.\u003c\/p\u003e\u003ch2\u003eOvality at the Tangent\u003c\/h2\u003e\u003cp\u003eThe section is most likely to be out of round just where the curve meets the straight. On a mandrel-formed bend that deviation is small, but it is where a slip joint binds if the fit is tight.\u003c\/p\u003e\u003cp\u003eCheck the end with a vernier across two axes before assuming a sleeve will go on.\u003c\/p\u003e\u003ch2\u003eFitting Into a Sleeve\u003c\/h2\u003e\u003cp\u003eIf this bend is going into something larger, chamfer the outer edge of the cut end. A square-cut edge catches on the sleeve and picks up a burr on the way in, and that burr is what stops the joint separating later.\u003c\/p\u003e\u003ch2\u003eTwo Bends, One Offset\u003c\/h2\u003e\u003cp\u003eA pair of 30° bends welded opposed with a short straight between them moves a run sideways without changing its direction. How far it steps depends only on the length of that straight, so one pair of bends covers a wide range of corrections — the standard answer to a silencer sitting a centimetre off where it should.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark makes 30°, 45° and 90° at forty-two millimetres.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618096472330,"sku":"G9120","price":26.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/6087d61db4614_801ee0e0-9085-4960-948a-2735a97b1b23.png?v=1788347438","url":"https:\/\/inter-pace.com\/en-mg\/products\/spark-exhaust-bent-tube-30-degrees-42mm","provider":"Inter-Pace","version":"1.0","type":"link"}