Low-cost, high-quality replacement belt from NARAKU. The belt corresponds to the standards of the original factory-fitted belt. The flexible core of the belt means good flex and low loss of friction. Good grip provides equally good acceleration. A good choice as an original spare and light tuning Suitable for Kymco Fever ZX / KB50 and 139QMB/QMA engines with 12” wheels or original size of the 729-18-30. As a guide, the distance between the crankshaft and the transmission input shaft (this is where the clutch bell sits). This belt is suitable were this measurement is approx. 25 cm Dimensions: 729-18-28