{"product_id":"spark-exhaust-bent-tube-90-degrees-76mm","title":"Spark Exhaust Bent Tube 90° Ø 76 × 1.5 mm Stainless Steel Universal G9161","description":"\u003cp\u003eSeventy-six millimetres at ninety degrees. The largest diameter Spark bends, in the tightest angle it bends it to — the most demanding part in the whole tube range.\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 76 mm outside, 1.5 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eThe largest diameter and sharpest angle in Spark's bend range.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 76 mm straight tube, article G9014.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9161, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe Limit of the Range\u003c\/h2\u003e\u003cp\u003eSpark makes nothing larger and nothing sharper. Above this size and beyond this angle the tooling, the material and the application all run out at once — motorcycles simply do not need a three-inch right angle very often.\u003c\/p\u003e\u003cp\u003eWhen one is needed it is usually a chamber or a box turning around a structural member, and the alternative is a segmented pie-cut with six welds in it.\u003c\/p\u003e\u003ch2\u003eWhy the Wall Is Thickest Here\u003c\/h2\u003e\u003cp\u003eTwo reasons at once. A large panel drums, and a millimetre and a half raises its natural frequency enough to damp it. And a right angle at this diameter is the most severe forming operation in the range — the extra material is what lets the inner heel compress without folding.\u003c\/p\u003e\u003ch2\u003eThe Space It Takes\u003c\/h2\u003e\u003cp\u003eWith tangents, something over two hundred millimetres in each direction. Before ordering, cut the shape from cardboard and hold it where it is meant to go. It is a five-minute check against a part that cannot be shortened in any useful way.\u003c\/p\u003e\u003ch2\u003eBore Consistency Matters More Than Flow\u003c\/h2\u003e\u003cp\u003eIn a chamber or a box, the point of a mandrel-formed bend is not the pressure drop — it is that the bore is the same all the way round, so a perforated core or an inner sleeve can be pushed through it. Through a segmented bend, it cannot.\u003c\/p\u003e\u003ch2\u003eWelding at 1.5 mm\u003c\/h2\u003e\u003cp\u003eThe most forgiving joint in the range. There is enough parent metal to bridge a small root gap without the edge falling away, which is fortunate: this is also the most expensive article here to replace.\u003c\/p\u003e\u003ch2\u003eTwo Hands, Clear Bench\u003c\/h2\u003e\u003cp\u003eLarge, thin relative to its diameter, and permanently marked by a dropped spanner. Clear the bench before it comes out of the box, and put nothing else on it while the part is there.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark builds 30°, 45° and 90° at seventy-six millimetres.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618250252554,"sku":"G9161","price":33.61,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/6087e7c94f3c4_84be3d6a-df8f-4fdc-9c7a-d207ecdf6eab.png?v=1788348572","url":"https:\/\/inter-pace.com\/en-ad\/products\/spark-exhaust-bent-tube-90-degrees-76mm","provider":"Inter-Pace","version":"1.0","type":"link"}