The BikesportNZ.com-backed rider said it was "going to be huge".
"I am very excited. I really can't wait," said the 16-year-old at Taupo's Tauhara College. "I have had some wonderful support from Yamaha and my other sponsors too and nobody is putting any pressure on me.
"I don't know anything yet about the other riders I may be facing but I have done a bit of homework on the track.
"I've had a look at it on YouTube and it seems quite similar to the motocross track at Timaru and I liked that when I rode there in February."
Chase typically races the Yamaha YZ250F four-stroke bike in his domestic campaigns at home, but he will be racing a Yamaha YZ125 two-stroke in Belgium.
"That's just the format for that event. I've been riding a lot on the YZ125 lately and I love it, so I'm feeling quite confident."
Chase's mother, Angela, agreed it would be a great stepping stone.
"Cohen has been given an amazing opportunity to race among the world's best," she said. "It will be a fantastic way to soak up the atmosphere and to experience first-hand in the Mecca of the motocross world overseas.
"We would also like to thank our sponsors ... FOX, Total Oil and Goldentyres who have product ready and waiting for us in the UK and we thank the public too, who have hugely contributed towards making this happen with the purchase of raffles tickets and by making donations."
Chase is no stranger to tough international competition, having raced with great success in New Caledonia and Australia in recent years. He finished fourth overall in the junior 250cc nationals across the Tasman earlier this season, missing out on a podium spot by just one point.
"Regardless of what happens in Belgium in August, I want to end up racing professionally in Europe."
Chase will not be alone in waving the silver fern flag at this event - he joins fellow Kiwi Josiah Natzke, the young Hamilton rider who last month spoke of his intention to tackle the world championships, the pair now forming a strong two-pronged Kiwi assault.
Meanwhile, one of the final events at home for the Kiwi heroes will be to tackle the Battle of the Clubs motocross in Taupo today.