For HPI Nitro Star F Series Pullstart Engines/Requires a 7.2V rechargeable “stick” battery pack and charger.
Ideal upgrade for the Nitro MT 2 G3.0!
The updated Roto Start 2 electric starting system in three versions!
Start your vehicle quickly and easily with the updated Roto Start 2. The Roto Start 2 features a more durable case and to protect your engine it comes with a built in circuit breaker which cuts off in case of an overload (e.g. a flooded engine).
The Roto Start 2 comes in three versions:
#87130 – HPI Roto Start 2 System with Pullstart for the Nitro Star F Series Engines
#87131 – HPI Roto Start 2 System with Pullstart for the Nitro Star K Series Engines
#87132 – HPI Roto Start 2 System Pullstart for the Nitro Star 12/15/18 Engines.
Source : HPI