{"product_id":"spark-exhaust-bent-tube-45-degrees-32mm","title":"Spark Exhaust Bent Tube 45° Ø 32 × 1.0 mm Stainless Steel Universal G9127","description":"\u003cp\u003eThirty-two millimetres through forty-five degrees. The everyday angle in the first of Spark's thin-wall sizes.\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 32 mm outside, 1.0 mm wall thickness.\u003c\/li\u003e\n\u003cli\u003eStraight tangents at both ends.\u003c\/li\u003e\n\u003cli\u003eMatches Spark's 32 mm straight tube, article G9006.\u003c\/li\u003e\n\u003cli\u003eSpark part number G9127, made in Mantova, Italy.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe S-Bend\u003c\/h2\u003e\u003cp\u003eTwo 45° bends facing opposite ways, with a straight between them, produce an S. The run leaves in one direction, steps across, and carries on parallel to where it started.\u003c\/p\u003e\u003cp\u003eOn a small machine that is how an exhaust gets from a header on the centreline out to a silencer mounted at the side of the frame. It is the most common shape in motorcycle exhaust routing and it is built from this article twice.\u003c\/p\u003e\u003ch2\u003eWhere 32 mm Belongs\u003c\/h2\u003e\u003cp\u003eHeader and link diameters on machines between 250 and 400 cc. Small enough to keep gas speed up on a modest engine, large enough not to choke it at the top — and the size several of Spark's db killers use as their internal bore.\u003c\/p\u003e\u003ch2\u003eClocking Two Bends\u003c\/h2\u003e\u003cp\u003eAn S only works if both bends lie in the same plane. Rotate one of them a few degrees about the tube axis and the run no longer comes back parallel — it corkscrews, and the error compounds over the length of the system.\u003c\/p\u003e\u003cp\u003eAssemble with tape on a flat surface first. A bench top is a better reference than the motorcycle for this particular check.\u003c\/p\u003e\u003ch2\u003eSpringback\u003c\/h2\u003e\u003cp\u003eStainless springs back four to eight degrees when a bender releases it, so a hand-made forty-five has to be pulled past fifty. A production bend has that compensation designed into the tooling and arrives at forty-five measured.\u003c\/p\u003e\u003ch2\u003eWeld Preparation\u003c\/h2\u003e\u003cp\u003eOne millimetre wall does not want a chamfer — there is not enough metal for one. Square cut, tight gap, clean metal, wiped with acetone rather than brake cleaner, and a stainless brush kept for stainless only.\u003c\/p\u003e\u003ch2\u003eHeat Tint as a Diagnosis\u003c\/h2\u003e\u003cp\u003eStainless colours where it has been hot, and the colour tells you how hot. A straw or light-gold band beside the bead is normal. A grey, powdery band is not: the weld overheated and chromium has been drawn out of the surface. That band will rust, and pickling paste is the only thing that fixes it.\u003c\/p\u003e\u003ch2\u003eOrdering\u003c\/h2\u003e\u003cp\u003eOne bend per article. Spark builds 30°, 45° and 90° at thirty-two millimetres, and a 500 mm straight length.\u003c\/p\u003e","brand":"Spark Exhaust","offers":[{"title":"Default Title","offer_id":53618172133642,"sku":"G9127","price":29.41,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/6087cf555f996_6013376a-6182-4f75-acbc-ce274452b09a.png?v=1788347948","url":"https:\/\/inter-pace.com\/en-mc\/products\/spark-exhaust-bent-tube-45-degrees-32mm","provider":"Inter-Pace","version":"1.0","type":"link"}