Scooter 39mm Cylinder Block Kit For Django 50 Kisbee 50cc E2 10mm Min 4-Stroke Engine Parts This cylinder block kit is designed for use with 4-stroke engines on such as the Django 50 and Kisbee 50cc E2 models.It features a 39mm bore diameter and includes components necessary for engine assembly or repair.The kit is compatible with engines requiring a minimum 10mm stroke.This part serves as a replacement option for the cylinder assembly, supporting standard performance in small displacement.