Axial 21RR-1 Engine ManualPost category:AxialPost published:July 2, 2019Axial 21RR-1 Engine Manual.pdf Tags: manual, nitro rc engine Share this RC document Share this content Opens in a new window Twitter Opens in a new window Facebook Opens in a new window LinkedIn Opens in a new window Reddit You Might Also Like Axial AX-2 Transmitter Instructions July 2, 2019 Axial 28RR-2 Engine Manual July 2, 2019 Axial Yeti Jr 1/18th Manual July 2, 2019