Complete OEM replacement crankshaft assembly.Factory trued and balanced.Final displacement determined by application.Ready to install.Connecting Rod Side Clearance0.4-0.8mmEngine Type2-CycleFinal Displacement50ccStroke39.960mmTypeStandardFits:KTM SX 50 2009-2023GasGas MC 50 2021-2023Husqvarna TC 50 2017-2023