GY6 180cc / RZR 170 Cylinder Head - 57mm B-Case

GY6 Power 180cc Replacement Cylinder Head.  Also fits Polaris RZR 170. 

*We recommend running Taida GY6 Dual Valve Springs with this head. 

Spec: 

• 57mm "B-case" stud spacing
• Exhaust Valve Diameter: 22.8mm
• Exhaust Port Diameter: 22mm
• Exhaust Port Bolt Hole Spacing: 50mm
• Intake Valve Diameter: 27.75mm
• Intake Port Diameter: 23mm
• Intake Port Bolt Hole Spacing: 45mm
• Overall Height: 66mm