With long time MX1 leader Josh Coppins forced to concede defeat before the event even began, due to a shoulder injury, Ramon faced a simple task - and took the title with second place behind Strijbos in moto one, while Marc de Reuver made a much needed comeback with third.
And the Dutchman - whose factory Yamaha future is in doubt - was the undisputed star of race two. After fending off a determined challenge from Ramon - seeking to justify his title with at least one grand prix win - Strijbos found himself being hunted down by a flying de Reuver in the closing stages.
Kevin, who moved ahead of Coppins for second in the championship, looked to have mounted a successful defence as he began the last lap two seconds in front - but de Reuver mounted one final charge and snatched a debut moto victory! de Reuver's dream ride also placed him second overall in the GP, as Ramon completed the podium.
"I knew a little bit what to expect after the first world title but it is a great feeling; that moment when it hits you 'I'm world champion'!" said Ramon, whose consistency handed him the crown. "I'm really happy with my second title [after the 2003 125cc crown] and I have been working hard for this.
"I had bad luck at the start of the season with some poor starts, a few crashes and then always having to come back through the pack. Around the middle of the year it started to get better and I took some wins and also some podiums but I had another setback with the crash at Loket and from that point until this race it was difficult to race with my wrist.
"It has been a strange season: I have had some bad results but I also know that it is important to fight for every point. It has not been my best year but I'm still the champion. We are now going to party tonight and also tomorrow!" he concluded.
"It was very tough today because the track was so hard," commented Strijbos, after his final grand prix for Suzuki. "The first moto was good - I had the right lines and could pull away - and then I had a nice battle with Marc and Steve in the second. It was hard work and I was really tired but it was enjoyable. I just lost out to Marc at the end because he had more momentum through the whoops but the overall win was mine. My knee is pretty painful and has been for the last two GPs. I will have an operation next Wednesday now and unfortunately I'll miss the 'Nations," he revealed.
"I knew I was quicker along the whoops section so I overtook there and went flat out for that last lap," explained de Reuver. "People went nuts on the track and I have never seen Dutch fans so wild so that made me happy. In the sand I can always do a bit more and I am known as a good sand rider but both my GP wins were on hard-pack."
In the MX2 class, double world champion Antonio Cairoli put together two strong motos to clinch yet another overall. South African Gareth Swanepoel was closest to the Italian in race one, when Kenneth Gundersen was third, while veteran Erik Eggens was second behind Cairoli in moto two, when Rui Goncalves took third.
Katherine Prumm won the final round of the FIM Women's Motocross World Cup. The Kiwi also took the Cup victory, in front of Livia Lancelot.