Complete Cylinder Piston End Kit for LT 50 LT-A 50 JR 50 1978-2006 This engine cylinder end rebuild kit is designed for use when experiencing blown cylinder gaskets, low compression, or piston seizure.The kit includes all necessary components for a full end rebuild. Kit includes: Cylinder Cylinder head Piston Piston rings (2) Piston pin Circlips (2) Wristpin needle bearing Spark plug Cylinder base gasket Cylinder head gasket Cylinder studs (4) Cylinder stud nuts (4) Condition: brand Quantity: 1 set Cylinder material: Steel Piston material: Aluminum Displacement: 49cc Bore type: Standard bore Bore size: 41.00 mm Stroke: 37.80 mm Pin diameter: 12mm Pin overall length: 33.7mm Compression ratio: 5.6:1 Fits the following models: JR50 1978–2006 LT50 Quadrunner 50 1984–1987 LT-A50 Quadmaster 50 2002–2005 Note: For LT50 models, the cylinder does not include a vacuum port near the intake for the petcock.This can be drilled if needed, or the port can be left disconnected as it is not required. Compatibility is provided for reference.Please verify fitment by comparing the included parts and images with your existing components. The product is an aftermarket replacement part.Vehicle manufacturer names are used solely to indicate compatibility. Important: This is a non-OEM part.Any brand or model cited is used to denote device compatibility.