Looking to add more manufacturers to the traveling circus, AMA Pro Road Racing has homologated the Aprilia RSV4 Factory ABS for racing duty, though with one interesting caveat. Instead of giving the 999cc Italian V4 a birth in the AMA Pro Superbike class, the RSV4 Factory has been homologated instead to race in the AMA Pro Supersport.

With Aprilia USA lacking a 600cc machine and the budget necessary to race at the factory level in the Superbike class, AMA Pro Road Racing officials have come to a compromise with the Italian company on how it can enter the American road racing scene with its current equipment, and hopefully thus spur its sport bike sales.

AMA Pro Racing continues to show that it’s homolo-flexible when it comes to supersport regulations, as America’s premier road racing series has homologated the 2013 Kawasaki Ninja ZX-6R and its 636cc engine displacement to compete in the supersport class (the new ZX-6R is also homologated for the Daytona Sport Bike class as well).

“Kawasaki has a strong racing heritage,” said Kawasaki Racing Senior Manager Reid Nordin. “Our Ninja brand is synonymous with success on the track. When we brought back the 636cc engine we knew there would be interest in racing and we have taken the steps necessary to have the new Ninja ZX-6R on the track and out front in 2013.”

UPDATE: On 2/10/2012, the FIM released an updated homologation list, which includes the 2012 Ducati 1199 Panigale S for racing in the World Superstock 1000 Cup.

The regulations for the 2012 World Superbike Championship are out, and two names are noticeably not present from the homologation lists for World Superbike and World Supersport: the Ducati 1199 Panigale and the MV Agusta F3. That’s right, the two biggest motorcycles to debut in 2012 have not yet been blessed to compete in this season’s two premier production motorcycle racing classes.

UPDATE: Aprilia and the FIM deny any irregularities with Biaggi’s Aprilia RSV4 at Assen.

Respected source in the World Superbike community, Sport-Bikes.fr is reporting that WSBK technical scrutineers have found an illegal fuel injection system on Max Biaggi’s Aprilia RSV4 Factory at the Assen round of the Championship series. According to World Superbike rules, the entire fuel injection system must be original to the street homologated motorcycle, including the pump, fuel lines, and injectors.

Scrutineering at Phillip Island found that the injectors of all three Aprilias were in compliance, as was also the case for the outlet pressure injection pump, which was checked at Donington Park. However at Assen, Max Biaggi’s RSV4 was found to be different from the bikes used by Camier and Haga, and was racing with a non-original fuel injection pump.

A fuel injection pump seems hardly a worthy offense to crucify the reigning World Champion over, and many will state that pushing the limits of the rule book is a part of racing (something Aprilia is already known for). Accordingly World Superbike has not docked Biaggi of his results from Sunday’s races, nor has it levied any sort of penalty for the team’s actions. Instead, Aprilia has simply been told it much replace the pump by the next race at Monza.

Donington Park has passed the final FIM safety checks, and been fully approved to host the second round of the World Superbike Championship at the end of this month, the first time the circuit has held a major event since 2009. The  inspection occurred while much of the racing press watched the season-opening races at Phillip Island, though Donington has been part of the official WSBK calendar since late last year.

The fame British track has been embroiled in a bit of drama over the past two years, having been taken over by Simon Gillett and partners, who hoped Donington would take the place of Silverstone as the British Grand Prix on the Formula1 calendar. When Gillett’s company fell apart, as did the F1 venture, Donington was left with its extensive redevelopment only partially completed. Kevin Wheatcroft stepped in as chairman to restore the shambles his father’s circuit had been left in, and worked to gain Britain its second WSBK race of the season, with the traditional round held at Silverstone in July.

The FIM has announced that BMW has homologated a new crankshaft design for World Superbike and World Superstock racing. Effective since June 10th, the new crankshaft, much like the Aprilia RSV4′s upgraded camshaft, could be part of the equation for BMW’s recent success in WSBK, and continued domination in STK1000.

Yesterday Pit Pass Radio interviewed Erik Buell Racing rider Geoff May, who answered some great questions about EBR and the problems the team’s facing racing a bike that was homologated for 2009, not 2010. With development essentially frozen, everyone is waiting for when Erik Buell is release from his non-compete agreement with Harley-Davidson.

Talking about the 2011 season, May shows some anticipation for racing an 1190RR in the AMA Pro Racing series, which could only occur with an exception from the AMA, or better yet…a production version that can be homologated for racing. We’re guessing it’s the latter, but listen to the interview yourself and make the call.

Controversy has hit Aprilia after Max Biaggi took second place in the Superpole shoot out. Alstare Suzuki owner and team manager, Jean Francois Batta told Italian network La7 that: “Everyone knows that the RSV4 is a prototype and shouldn’t be racing here in SBK. After the race I’m going to the technical commission and lodge a complaint.” According to paddock gossip the Alstare techs seem to have had a tiny peek at Aprilia’s fuel system and saw something that did not convince them. Fuel systems according to Superbike regulations have to be identical to the road bike version. Since Aprilia’s return to the series, several teams have quietly expressed concern regarding Aprilia’s new superbike, deeming it not yet a true production bike.