{"product_id":"spark-exhaust-stainless-tube-45mm-500mm","title":"Spark Exhaust Stainless Steel Tube Ø 45 × 1.0 mm 500 mm Universal G9002","description":"\u003cp\u003eForty-five millimetres of straight AISI 304. Large enough to carry a big twin on its own, and one of only two diameters Spark bends through a full 180 degrees.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStraight exhaust tube, AISI 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003eØ 45 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003e500 mm long.\u003c\/li\u003e\n\u003cli\u003eOne of the two sizes Spark also offers as a 180° bend.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9002, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere the U-Bend Comes In\u003c\/h2\u003e\u003cp\u003eSpark bends only two diameters through 180 degrees: this one and fifty. Both are sizes used in underseat routing and in tight two-into-one work, where the pipe has to double back on itself in a space no bender can reach.\u003c\/p\u003e\u003cp\u003eIf your design has a U in it, check that it is at 45 or 50 before you commit — making one at any other diameter means two 90° bends and a weld in the middle.\u003c\/p\u003e\u003ch2\u003eSizing to the Engine\u003c\/h2\u003e\u003cp\u003eForty-five suits a large parallel twin, a V-twin of eight hundred to a thousand, or the front section of a four before the collector. It is on the generous side for anything smaller: gas speed falls, and with it the low-rev pull that makes a road bike pleasant.\u003c\/p\u003e\u003ch2\u003eBuying Bends Instead\u003c\/h2\u003e\u003cp\u003eSpark offers this diameter as a ready-made 30°, 45°, 90° and 180° bend. On a fabricated system the usual approach is straight stock for the runs and factory bends for the corners — the bends are mandrel-formed, hold their section and cost less than the tooling to make one.\u003c\/p\u003e\u003ch2\u003eStoring It\u003c\/h2\u003e\u003cp\u003eCap both ends and keep it dry. Stainless does not rust from clean air, but a tube left open in a workshop collects grinding dust, and embedded steel particles are what starts the orange spots people blame on the material.\u003c\/p\u003e\u003ch2\u003eHow Much to Buy\u003c\/h2\u003e\u003cp\u003eA one-off system almost always consumes more tube than the drawing suggests. Mitred joints waste material, a bend that comes out at the wrong angle is scrap, and every slip joint needs an overlap. Two lengths where the design says one is not extravagance — it is the difference between finishing a build in a weekend and waiting for a delivery.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eSupplied as one 500 mm length. Nothing is cut to size.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53617860804874,"sku":"G9002","price":147.38,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/5c0fcb22c4a53_f63a9118-ecc7-47fa-a8d2-9ba1cfbcdad2.png?v=1788362708","url":"https:\/\/inter-pace.com\/en-fo\/products\/spark-exhaust-stainless-tube-45mm-500mm","provider":"Inter-Pace","version":"1.0","type":"link"}