See: MCD Racing

MCD Racing have introduced new engine heat sink for the RR5 buggy. The heat sink is machined from a block of 7075 aluminium. The heat sink decreases the temperature of the spark plug by around 10°C when the external temperature is 35°C+. The decrease in temperature on the spark plug substantially effects the performance of the engine. Only long thread NGK CRE8 or NGK CR8EIX Iridium spark plugs are compatible with this heat sink.

Also MCD Racing have developed a new composite protector to protect both the short and long spark plug versions and the heat sink. The part is designed specifically for providing a secure protection against tumbling and hard impacts. The protector fits perfectly with the MCD Barracuda pipe air flow.