| This is the HPI Roto-Start K-Series Engine Backplate for use with HPI's K4.6 and K5.9 engines found in the Savage SS .28, Savage 4.6, Savage X 4.6, Savage XL K5.9, and Hellfire trucks. This is the Roto-Start backplate only. If you need the complete system, please search for part number HPI87126. |