Shipped from our SC warehouse, this Top Quality GY6-50 Scooter Crankshaft For 49-100cc ,fits all Ice Bear scooters with 4 Stroke 49-50cc engines. Comes with bearings installed as shown. It has 26 splines, Thin gear = 17th, Thick Gear =16th. Bearing OD: Side 1=42mm, Side 2=47mm. Please confirm fitment before ordering.