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This is a Novarossi REX H9 VRS Helicopter Tuned Pipe. This tuned pipe has been designed for use with the Novarossi R91HR 3D helicopter engine, but is also an excellent pipe for O.S. and Y.S. 90 size heli engines.

Note: This pipe does not include a manifold.  Use the NVR40491 manifold with Novarossi or O.S. Engines, and the NVR40492 with Y.S. Engines.