70cc cast iron cylinder kit from Naraku for Morini enginesThe Naraku piston is supplied with a molybdenum coating which protects both cylinder and piston during the running in process, this coating usually dissolves after timeThis cylinder is suitable for use with original and performance exhaust systemsIf using the original carburettor you will need to upjet approx 7-10% but we do recommend using a 17.5 - 19mm carburettor for optimum performanceSupplied as shown on the product photoOriginal cylinder head can be used, but 70cc cylinder head is recommended (to purchase separately)This kit is ideal for everyday use with significant power gains on acceleration