HPI Racing 1/8 Savage X 4.6 Roto Start Battery & Charger – Dollar Hobbyz
HPI Roto Start 2 System w/Backplate [HPI87130] - AMain Hobbies
RCE87104 Starter Shaft w/O-Ring, for HPI Rotostart (220mm) This is a direct replacement for HPI87104 or HPI87116, featuring a black-oxide finish and two spare o-rings. - SHADOW HOBBIES
160060 HPI ROTO START 3 SYSTEM (FOR NITRO STAR F/G SERIES ENGINE w/PULLSTART)