... hole 14-17 or 17-20 2)For ATV,Dirt bike,Go Kart 3)420/428/520/530 4)45# Steel ... -202)For ATV,Dirt bike,Go Kart3)420/428/520/5304)45# SteelFit for following brand ATVLoncin,Yamaha,Linhai,Honda,Zongshen, Buyan ... 15 Tooth 520 20MM Sprocket for ATV Quad Dirt Pit Bike Parts