HPI Racing optional adapter for use on the Roto-Start System on the Nitro Star 12/15 Engines. Constructed of plastic and steel. This product includes one front gear cover. One rear plate. One 32 tooth gear. One 11 tooth gear. Six 2.6x10mm cap head machine screws (Z422). One allen key. One installation sheet. This adapter will work with all stock HPI headers on all vehicles except for the Nitro Rush and the HPI Nitro RS4 2, Nitro RS4, and the Super Nitro, this adapter will not work with the A950 header.
Requires: Installation onto HPI Nitro Star 12/15 engine