It is the company's largest single investment in British cereal production in more than 30 years.
The Wrexham site opened in 1978 and is Kellanova's largest Special K plant in the world. Other brands including All Bran, Bran Flakes and Fruit 'n Fibre are also produced on site.
As the business winds down its Trafford Park factory, set to close in late 2026, brands including Corn Flakes and Crunchy Nut will transition to Wrexham - which produces about 1.5 million boxes of cereal per day.
As well as increasing capacity, two new advanced production lines will enhance the sustainability of cereal manufacturing by enabling use of artificial intelligence and machine learning technology to lower energy consumption during the production process.
Annually, this will reduce CO2 emissions by 11 per cent.
The investment will result in the creation of at least 130 jobs in Wrexham, support career development for the 350 existing colleagues based there, and provide continued employment opportunities for colleagues at its Manchester plant.
Kellanova UK managing director Chris Silcock said: "This investment is a major commitment to cereal production in the UK. By bringing together the manufacturing of all our major breakfast cereals at one site in Wrexham, we can make significant leaps forward in the efficiency, quality and sustainability of our operation. It sets us up for future success and opens up new possibilities for our iconic brands to continue delighting our customers and consumers.
"This is also a huge investment in our people. We’re very pleased that we will be creating at least 130 new roles in Wrexham, as well as improving the existing facilities for our colleagues."
Secretary of state for Wales Jo Stevens added: "Kellanova's plans are another huge vote of confidence in the economy of north east Wales. I am delighted to see many more new jobs and major investment coming to the area so soon after Eren Holdings' announcement at Shotton Mill.
"This government's key mission is to grow our economy. Making the UK the destination of choice for investors is a crucial part of that plan. And this news is the latest demonstration of the huge part Wales has to play in achieving our growth mission."
