HPI ROTO START 2 SYSTEM (K SERIES W/ LONG SHAFT) BACK PLATE FOR USE ON K SERIES ENGINES. LONG SHAFT FOR USE WITH EXTENDED SAVAGE CHASSIS. REQUIRES A 7.2V RECHARGEABLE \"STICK\" BATTERY PACK & CHARGER.
HPI ROTO START 2 SYSTEM (FOR NITRO STAR F SERIES ENGINE W/PULLSTART FOR HPI NITRO STAR F SERIES PULLSTART ENGINES/REQUIRES A 7.2V RECHARGEABLE STICK BATTERY PACK AND CHARGER