This engine is supplied with a pullstarter. If you prefer to use a Roto Start with this engine, you will need 87132 Roto Start 2 Set and a standard 7.2 volt stick pack battery . A variety of race-tuned standard features will make the T3.0 your engine of choice. The finned crank case helps keep everything running at the right temperature, and the tall finned aluminium cooling head further reduces operating temp for optimum efficiency. With ABC construction (Aluminium piston, Brass cylinder liner sleeve, Chrome-plated liner) you get the benefit of decades of 2-stroke racing technology. The composite carb keeps needle tuning consistent as the engine heats up, and the wide 6.5mm opening ensures a good supply of fuel to the combustion chamber.