Performance atv quad sprocket 11T~18T 1)Inner hole 14-17 or 17-20 2)For ATV,Dirt bike,Go Kart 3)420 ... Kart3)420/428/520/5304)45# SteelFit for following brand ATVLoncin,Yamaha,Linhai,Honda,Zongshen, Buyan,Polaris,Bashan,Hsun,Shineray,Jinling,kazuma ... hole 6 teeth 17mm-20mm 15 Tooth 520 20MM Sprocket for ATV Quad Dirt Pit Bike Parts