{"product_id":"spark-exhaust-bent-tube-90-degrees-60mm","title":"Spark Exhaust Bent Tube 90° Ø 60 × 1.0 mm Stainless Steel Universal G9112","description":"\u003cp\u003eSixty millimetres at ninety degrees. The largest right angle in Spark's thin-wall range, and the biggest single object in most custom exhaust layouts.\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 60 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eMatches the inlet of Spark's universal silencers.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 60 mm straight tube, article G9004.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9112, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eStraight Into the Silencer\u003c\/h2\u003e\u003cp\u003eSome layouts put the case at right angles to the pipe that feeds it: a side-mounted silencer on a machine whose collector points rearward, or an underseat can fed from below. At sixty millimetres that final corner goes directly into a Spark universal case with no adapter between them.\u003c\/p\u003e\u003cp\u003eCollector, bend, silencer. It is the shortest parts list a custom system can have.\u003c\/p\u003e\u003ch2\u003eThe Sweep Is the Constraint\u003c\/h2\u003e\u003cp\u003eCentreline radius grows with the tube, so a right angle at sixty takes far more room than one at forty — roughly a hundred and sixty millimetres square with the tangents counted. On a motorcycle that is a large object competing for space with the wheel and the subframe.\u003c\/p\u003e\u003ch2\u003eLoss Does Not Scale With Size\u003c\/h2\u003e\u003cp\u003ePressure loss through a bend depends on the ratio of radius to diameter, not on the absolute figures, so a large right angle is not proportionally worse than a small one. What does scale is the recirculating region behind the corner: it grows with the tube and takes longer to reattach.\u003c\/p\u003e\u003cp\u003eGive it a straight afterwards if the layout allows one.\u003c\/p\u003e\u003ch2\u003eWhere the Weight Is\u003c\/h2\u003e\u003cp\u003eA right angle at this diameter is around half a kilogram, and it usually sits at the back of the motorcycle. That is the worst place on the machine for mass, and it is worth counting when a build is being compared against a bike-specific system on the scales.\u003c\/p\u003e\u003ch2\u003eSetting Up Without Magnets\u003c\/h2\u003e\u003cp\u003eAustenitic stainless is non-magnetic, so magnetic angle blocks and clamps do nothing here. A large right angle needs proper mechanical support while it is tacked — vee blocks, clamps and a flat bench — because its own weight will pull a tack apart.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark builds 30°, 45° and 90° at sixty millimetres.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618249072906,"sku":"G9112","price":31.93,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/5c0e99d94fc3b_d0df8006-cd02-4f7a-813d-1241958ad91c.png?v=1788354316","url":"https:\/\/inter-pace.com\/en-zm\/products\/spark-exhaust-bent-tube-90-degrees-60mm","provider":"Inter-Pace","version":"1.0","type":"link"}