Redcat Racing 11011H12 Back Plate for Electric Starter Fits Vertex 0.16, 0.18, and SH 0.18 and 0.21 Engines
Compatible with: Aftershock 21, Aftershock 3.0, Aftershock 3.5, Backdraft 3.5, Caldera 3.0, Earthquake 3.0, Earthquake 3.5, Landslide 21, Lightning STR, Sandstorm 21, Shockwave, Tornado BB, Tornado S30, Volcano MX, Volcano S30, Volcano SV, Volcano T2, Vortex SS.