Big bore kazuma atv parts change 125CC 150CC to 250CC 1)63MM 2)GY6 CVT Engine Big bore kazuma atv parts change 125CC 150CC to 250CCPerformance Cylinder kit change GY6 125/150CC to 250CC(63MM) These parts fit for ATV,Quad,Pit bike,Dirt bike,Go Kart,Buggy For ATV and Quad,fit for Loncin,Yamaha,Linhai,Honda,Zongshen,Buyan,Polaris,Bashan,Hsun,Shineray,Jinling,kazuma,Lifan,Taotao,Suzuki,chinese,gsmoon ...