{"product_id":"katech-cnc-cylinder-head-porting-service-1","title":"Katech CNC Cylinder Head Porting Service","description":"The Katech 241\/806\/853 Basic CNC Cylinder Head Porting Service (KAT-M4321) offers enhanced engine performance through precision CNC machining of your existing cylinder heads. This service focuses on optimizing the intake and exhaust ports to improve airflow and overall engine efficiency. The process includes precision CNC porting of both intake and exhaust ports, along with a distinctive Katech logo engraving for authenticity and quality assurance.\n\nTo utilize this service, you will need to remove the cylinder heads from your vehicle, disassemble them to a completely bare condition, and thoroughly wash them. Once prepared, print a copy of your order confirmation and include it in the box with the cylinder heads before shipping them to Katech Engineering at their Clinton Twp., MI facility. Please ensure the cylinder heads are packaged securely with ample bubble wrap within a sturdy box to prevent shipping damage.\n\nThis service covers only the CNC porting and logo engraving. Assembly, valve work, and any additional machining services are not included and must be added separately if required. Please note that heads arriving with valve seals installed or any oil residue or carbon in the ports will incur a minimum $70 cleaning fee. It is crucial to include your order confirmation with the shipment to prevent processing delays.","brand":"GM","offers":[{"title":"Default Title","offer_id":52688570384696,"sku":"KAT-M4321","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/663689824.png?v=1784891180","url":"https:\/\/store.motormia.co\/products\/katech-cnc-cylinder-head-porting-service-1","provider":"MOTORMIA","version":"1.0","type":"link"}