Arrow not catalyzed central mid pipe / tube no-Kat for Yamaha YZF R1 / R1M 2017>

Arrow Manifolds / Fittings:

They look like simple pipes, but they are not. Made of AISI 304 stainless steel and, in Competition versions, also in titanium alloy, Arrow collectors kits that are sold in stores hide behind a meticulous development work carried out directly by our R & D department that puts all the experience in the field accumulated in tracks all over the world. To this fundamental ingredient is added then the "touch" as a master of our prototypists: diameters, section variations, components, welds and layout are carefully checked to obtain a high performance, reliable and last but not least, beautiful to see . Depending on the engine and its ignition scheme, the best possible configuration for the grouping of the manifolds to the terminal is chosen. Therefore, we are talking about 4: 2: 1, 4: 2: 2, 2: 1: 2, 4: 2: 1: 2, 3: 1: 1 patterns and so on that the less experienced might just look like coach rants of football, on the other hand, are one of the most important aspects to be followed for the construction of a collector plant. But theory is not enough, we need extreme care in the production process: it is essential to better connect the various section passages, to have a flow of gas as smooth as possible. For this purpose the junctions between the various components of the manifold kits are made with parts machined from solid with CNC machines. For the same reason, the welds must be slightly "invasive" and must not reduce the cross-section of the exhaust gases.