Engine Transmission Gear for Balance Shaft 1, Biggest supplier for start gear ... 3, Engine Transmission Gear for Balance Shaft is suitable for kinds of motorcycle engines with ... balance shaft, such as Yamaha, Jianshe, Zongshen etc.4 ... Material: 20CrMnTi, C45, 40Cr, 20CrMo, stainless steel or special as your requirement7, Main process: 8, Some advanced ...