{"product_id":"spark-exhaust-bent-tube-45-degrees-42mm","title":"Spark Exhaust Bent Tube 45° Ø 42 × 1.0 mm Stainless Steel Universal G9121","description":"\u003cp\u003eForty-two millimetres at forty-five degrees. The working angle in the size that exists because manufacturers do not build to round numbers.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMandrel-formed 45° bend, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 42 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eForty millimetre bore — 40 mm tube slides straight in.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 42 mm straight tube, article G9008.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9121, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAdapting to What Is Already There\u003c\/h2\u003e\u003cp\u003eA great many custom exhausts start at an existing header rather than at a blank sheet, and that header is whatever the manufacturer chose. Forty-two turns up often enough that Spark keeps the size, and matching it saves both a transition piece and the flow disturbance a transition causes.\u003c\/p\u003e\u003cp\u003eMeasure across the outside with a vernier. A workshop manual figure is usually a nominal internal dimension and will send you to the wrong article.\u003c\/p\u003e\u003ch2\u003eA Corner With a Socket in It\u003c\/h2\u003e\u003cp\u003eForty-two outside on a one millimetre wall gives a forty millimetre bore, so a 40 mm pipe pushes straight into the end of this bend. The corner and the coupling become one part, with no sleeve to make and no butt weld to align.\u003c\/p\u003e\u003cp\u003eOn a project built in forty millimetre tube, a couple of these turn a welded system into a serviceable one.\u003c\/p\u003e\u003ch2\u003eMeasuring an Angle Accurately\u003c\/h2\u003e\u003cp\u003eA digital angle gauge on the two straight tangents is worth more than eye judgement, particularly when two bends are being combined. Half a degree of error at the first joint becomes a centimetre of misalignment at the silencer.\u003c\/p\u003e\u003ch2\u003eChamfering the Male End\u003c\/h2\u003e\u003cp\u003eIf this bend is going into a larger sleeve, break the outer edge of the cut with a file. A square edge catches on the way in, raises a burr inside the sleeve, and that burr is what stops the joint coming apart again for service.\u003c\/p\u003e\u003ch2\u003eOvality Where the Curve Ends\u003c\/h2\u003e\u003cp\u003eAny bend is least round at the tangent point. On a mandrel-formed piece the deviation is small, but a tight slip fit will find it. Measure across two axes before assuming a pipe will slide in, and round the end on a mandrel if it needs it.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark builds 30°, 45° and 90° at forty-two millimetres.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618176098570,"sku":"G9121","price":131.0,"currency_code":"SAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/6087d6adbd301_38bd2cee-f39a-4d7a-95c3-e5706d1d8342.png?v=1788347976","url":"https:\/\/inter-pace.com\/en-sa\/products\/spark-exhaust-bent-tube-45-degrees-42mm","provider":"Inter-Pace","version":"1.0","type":"link"}