{"product_id":"spark-exhaust-bent-tube-90-degrees-70mm","title":"Spark Exhaust Bent Tube 90° Ø 70 × 1.2 mm Stainless Steel Universal G9158","description":"\u003cp\u003eSeventy millimetres at ninety degrees, in a wall a fifth thicker than the sizes below. A right angle at a diameter where most workshops stop trying.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMandrel-formed 90° bend, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 70 mm outside, 1.2 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eThicker wall than the 32 to 60 mm bends.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 70 mm straight tube, article G9009.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9158, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eA Corner in a Chamber\u003c\/h2\u003e\u003cp\u003eAt seventy millimetres a right angle is not routing gas — it is turning a volume. Pre-silencer boxes, expansion chambers and the large sections of a custom system sometimes have to change direction around a subframe or a shock tower, and there is no way of doing it in less space.\u003c\/p\u003e\u003ch2\u003eThe Hardest Thing in the Range to Form\u003c\/h2\u003e\u003cp\u003eLarge diameter, thin wall, maximum angle. Every factor that makes a tube collapse under a bender is at its worst here, which is why a formed ninety at seventy millimetres is a specialist part rather than something a fabricator produces on the day.\u003c\/p\u003e\u003cp\u003eThe failure mode is a folded inner heel: the material buckles instead of stretching, the bore is permanently reduced at the turn, and nothing recovers it.\u003c\/p\u003e\u003ch2\u003eCard Before Cash\u003c\/h2\u003e\u003cp\u003eWith the tangents counted, this bend occupies a cube roughly two hundred millimetres on a side. Cut the outline from stiff card and hold it in place before ordering — on a part this size a drawing is not a substitute for the real footprint.\u003c\/p\u003e\u003ch2\u003eFitting to a Flat Face\u003c\/h2\u003e\u003cp\u003eA box built around this diameter usually meets a plate somewhere: a bulkhead, a mounting face, an end cap. Cutting a large tube to sit square on a flat is a template job rather than an eye job — wrap paper, mark, cut, and check the fit dry before any heat.\u003c\/p\u003e\u003ch2\u003eShipping Damage\u003c\/h2\u003e\u003cp\u003eA large thin bend is the article most likely to arrive dented. Check both tangents with a vernier across two axes when it comes out of the box, before anything is cut — a part that is out of round on arrival is returnable, and worthless once it has been shortened.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark builds 30°, 45° and 90° at this diameter.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618249957642,"sku":"G9158","price":40.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/6087e433de973_22da72fd-0f2f-4a92-be2e-d87618344e0a.png?v=1788348564","url":"https:\/\/inter-pace.com\/en-it\/products\/spark-exhaust-bent-tube-90-degrees-70mm","provider":"Inter-Pace","version":"1.0","type":"link"}