250cc 4-stroke CN250 water-cooled 172mm engines (Works on many CN 250 / CF 250 based engines) CF MOTO engines are found in many QLINK, TNG, DIAMO, Powersports Factory, Yamati, Sunright and other private label brands that have used the CF MOTO engine. 250cc 4-stroke water-cooled 172mm V3/V5 engines. The CN 250cc engine is based on the original Helix 250 by Honda. There is also the Linhai Yamaha Majesty based 250/260 engine it uses different parts, but some items such as starters are sometimes the same. Please check CN 250 parts before using on the Linhai engines. Some items cross over most don't depending on the brand.