This is the Nitro Power 91 tuned pipe from GP-Exhaust for OS 70-91, TT 70-91 and Webra 70-91 engines. This tuned pipe is polished aluminum for outstanding looks.
Hand made in Germany by a craftsman with over 20 years experience in RC model engine design work and manufacturing the goal of GP-Exhaust is to provide the modeler with the finest exhaust systems available on the market. Dedicated to designing and building the best exhaust systems for helicopters and airplanes they test their products on the latest engines to generate the best performance level. There are many factors which determine whether a model engine runs well, and silencers or tuned pipes are among the most important of them. In addition to muffling the exhaust noise, the silencer or tuned pipe also has an important influence on the performance characteristics of every engine and GP-Exhaust is constantly improving the characteristics of their different exhaust systems to maximize power and reliability. These pipes are carefully crafted with weights similar to the equivalent well-known Japanese tuned pipes, and are significantly lighter than many of their competitors. Simple to install with only two high tensile bolts, the craftsmanship of these pipes equals any and surpasses many of the currently commercially available exhausts! This pipe will fit most 90 class helicopters including the Airskipper, Caliber, Ergo, Freya, Raptor and Sylphide.
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