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The guys at Bakker have been busy this year, first bringing us a re-imagining of the Suzuki TL1000R, and now a turnkey Moto3 class contender. Noting that two-stroke race bikes are going the way of the dinosaur, the master frame builders at Bakker set out to make a four-stroke package that would fit into MotoGP’s Moto3 series and other 250cc single-cylinder racing classes.

Able to accomodate any manufacturer’s motor, Bakker has a Suzuki-powered model (the Bakker RM-Z250R) that’s been proven in the Open Dutch Championship (ONK) 125cc, the German IDM 125cc, and the UEM Supermono Cup. The Dutch company also has a Honda-powered unit that is ready to go for Moto3 competition when the rules switch in 2012.

American youths can rejoice to the news that the 2011 Aprilia RS4 125 will be coming to the United States for 2011. The four-stroke 125cc beginner bike may only have 15hp, but it has been done-up to look like the RSV4, and that’s what matters right? Replacing the RS125, the RS4 125 is supposedly just a Derbi in sheep’s clothing, but considering both brands come from the Piaggio mother ship, we fail to see why that would be an issue to a 16-year-old who has somehow managed to convince his/her parents to buy them a motorcycle. The liquid-cooled, four-valve, DOHC motor comes with electric fuel-injection, and is mated to a six-speed gearbox. Weight is 264 lbs with a full 3.8 gallon tank of gas. Technical Specifications after the jump.

Honda has begun teasing its NRS250 race bike, which many believe will be the basis to the company’s involvement in the Moto3 racing class that will replace 125GP racing in 2012. NRS stands for “Next Racing Standard”, not to be confused with NSR series of two-stroke machines from Honda (Editor’s note: Great naming convention, right?), and not much is known about the bike beyond these dark photos.

Meeting this weekend, the GP Commission confirmed the demise of two-stroke GP racing as they finalized plans to start the Moto3 series in 2012. Replacing the 125GP racing class, Moto3 will center around 250cc singe-cylinder four-stroke motor with a maximum bore size of 81mm. The class will be open to multiple engine manufacturers, who will have to make their motors available for €10,000 or less.

Two-stroke GP racing is expected to die next year, and the announcement of the Moto3 class is expected to occur during the GP Commission’s meeting at the Czech GP in a couple days. Scheduled to meet on Friday, the GP Commission has been hammering out the details on the 250cc single-cylinder four-stroke racing class that will replace 125GP in 2012, and will likely make an announcement after Sunday’s race.

Similar in concept to the Moto2 class, the most notable difference is the rumor that the Moto3 class will not be a spec-motor series, meaning any manufacturer can build a thumper and compete in the series. Considering the large number of manufacturers that already have experience racing 250cc singles, we can expect an array of bikes to be on the grid in 2012.