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Lorenzo Wants to Race at Assen Despite Breaking Collarbone in Three Places

Jorge Lorenzo underwent two hours of surgery earlier this morning in Barcelona, Spain, to insert eight screws and a titanium plate to secure his fractured collarbone. By the afternoon, the Yamaha rider was back in the Netherlands to prove he is healthy enough to race in tomorrow’s TT Assen. The reigning MotoGP champion broke his collarbone in three places after high-siding in a wet practice session Thursday.

Teaser: 2012 Japanese Literbike Shootout – Video

The last time we assembled the superbike offerings from the Big Four Japanese manufacturers to determine the alpha male model was 2009. The CBR won that confrontation, but a lot’s changed since then. For 2012 Honda revamped the CBR1000RR, Yamaha added traction control to the R1, the GSX-R1000 lost a muffler and last year Kawasaki introduced an all-new ZX-10R.

Honda Announces 400cc Version of 500-Series Engine

Honda has revealed a new, smaller-displacement variation of the 470cc parallel-twin engine introduced on its new CBR500, CB500F and CB500X models. The new engine has a bore of 67mm, just like Honda‘s 500-series engine, but a stroke of 56.6mm instead of the longer 66.8mm. The result is an engine displacement of 399cc, which makes the new engine a better fit for markets such as Japan license restrictions are much stricter for engines larger than 400cc.