Application For 2007-2018 compatible for Honda TRX420 Rancher 420OE/ Part number Base Gasket:12191-HP5-601 Circlips:13112-MAT-000 Cylinder:12100-HP7-A00, 12100-HP5-600 Head Cover Gasket:12315-HP5-601 Piston:13101-HP5-600 Head Gasket:12251-HP5-601, 12251-HP7-A01 Piston Rings:13010-HP5-600 Wristpin:13111-HP5-600 Specification Type: Cylinder Kit Engine Type:4-Stroke Displacement Type: Direct replacement Compatible Type:ATV Placement on Vehicle: Front Cylinder Bore Size:86.5mm Piston: With 9.9:1 Compression Ratio Color: Gray Package included 1x Cylinder 1x Piston Ring Kit (Piston, Piston Rings, Wristpin, Circlips (2) 1x Head Gasket 1x Base Gasket 1x Head Cover Gasket As shown in the pictures. Feature Engineered & Tested to Meet or Exceed Original Equipment Standards & Performance. Cylinder: a 86.50mm Standard Bore Piston: With 9.9:1 Compression Ratio. Gaskets: High quality & will keep a perfect seal between all of the components. Professional installation is highly recommended Note Please confirm...