• WSI CNC Cylinder Head Porting Service
• WSI Cylinder Head Deck Service
  
• WSI Cylinder Head Valve Job Service
• WSI Vapor Hone Clearing Service

Please ship your cylinder head core to the following address: 
Whalen's Speed R&D
161 Commercial Avenue,
Paw Paw, Michigan 49079

Take your naturally aspirated, non-turbocharger Polaris Pro R to the next level with the WSI CNC Cylinder Head Porting Services! Please note all WSI CNC Ported Cylinder Head Services REQUIRE the +1mm Intake and Valve option. OEM standard size valves will not fit with this service. Valve Spring and Valve Stem Seal options can be added at an additional cost.