Piston Rings Kit 40mm with 12mm Pin For 50cc 2 Stroke 1PE40QMB Minarelli JOG 50 Moped Scooter This piston rings kit is designed for use with 50cc 2 stroke engines, specifically fitting models with a 40mm bore and 12mm wrist pin.Compatible with 1PE40QMB engines and commonly used in Minarelli, JOG 50, and similar moped.The set includes piston rings and a wrist pin to support engine rebuilds or performance maintenance.Engineered for precise fitment and in small displacement two-stroke applications. This is a non-OEM replacement.Any mention of brand names is strictly for compatibility clarification.