Motorcycle Engine Cylinder Kit with Piston Rings Gasket 86.5mm 420cc Engine Cylinder For TRX420 420 Rancher420 2007-2018 This engine cylinder kit is designed for compatibility with 420cc motorcycle engines. It includes a cylinder, piston rings, and gasket set with a bore size of 86.5mm. The components are engineered to fit models requiring this specification, particularly those used in TRX420 and 420 Rancher applications from 2007 to 2018. The kit supports engine rebuilds by providing essential parts for cylinder replacement and performance restoration. This is a replacement part from a third party. All brand/model references serve only to show intended compatibility.